Hello Brian.
I have towed many different caravans, some with what seems to be heavier than average nose weights, but I have always been able to achieve my desired nose weight either by rearranging the items in the caravan or by adding ballast for trim. I used to carry empty water containers, that I could fill and use to provide the ballast. In your case I suggest moving the awning and poles further behind the axle. Whilst this will increase the pendulum moment, we are only dealing with perhaps 20Kg so it should still be well within the control of the vehicle.
Unfortunately your method of measuring nose weight is not correct. The EU regulations require the nose weight of the trailer to be measured with the hitch at the same height as when it is coupled to the tow vehicle and ready to tow with all luggage and passengers. That usually means the caravan is not level, more often than not it will be slightly nose down, which will tend to increase the nose weight measurement which is why I said 'unfortunately'
The height of the hitch is important, because if you tip a caravan up or down from its towing angle the actual nose weight changes.
It is also unfortunate you have purchased a nose weight gauge because none of the commercially available gauges (at the time of writing) have the ability to be adjusted for towing height, which introduces an inaccuracy. Also as most of then simply use a spring in compression, t means depending on the applied load the length of the device changes the measurement height, another inaccuracy, and finally as far as I am aware only one manufacture claims their gauge is 'calibrated' but even then the graduations are so wide its difficult to make an accurate reading. Gagakev has already pointed out that his gauge was clearly far from accurate. So you can see I have a very dim view of these propriety nose weight gauges.
How To Measure Nose Weight
Nose weight will vary if you load your car or caravan differently. So you can only accurately measure your nose weight when you are set up with all your luggage and passengers and ready to tow.
Find a piece of horizontal ground big enough for your outfit
Park up and leave your loaded caravan coupled to the loaded car.
Measure and record the height of the hitch from the ground
Chock the caravan wheels and uncouple the caravan, release the caravan brake .
Place your measurement device under the hitch and adjust it to set the caravan hitch to same height as when it was coupled to the car.
Make sure no steadies or the jockey are touching the floor and then take your nose weight reading.
What can go wrong!
Well several things, the ground must be as level and horizontal as possible, any slope will affect the nose weight reading.
And at the time of writing, non of the retail nose weight gauges allow you to adjust their height to match the correct coupling height
And the majority of the retail nose weight gauges have coarse measurement graduations preventing you from making an accurate reading, and most of the gauges are not guaranteed to be accurate and repeatable.
So basically anyone who uses a retail gauge in practice cannot say with the required degree of accuracy what their nose weight actually is.
A Practical Solution
Fortunately there is a reasonably practical solution. Most of us already have a set of bathroom scales, which have fine graduations, and in all probability will be inherently more accurate than most of the dedicated nose weight gauges.
Find a piece of flat wood that will lie on the scales to protect them. either find some blocks or caravan step to raise the scales to the required height, or cut a length of broom handle to stand on the scales and wood, such that the hitch is supported at the required height.
You can also check the accuracy of your scales by loading then with known weights, for example take an empty 25 Litre plastic bottle, weigh it, then fill it with 25 Litres of water and re weigh it, The difference in the readings should be 25Kg
hmy:
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