Hi, is it just me or does anyone else have this problem, when I fill our fridge to set off, then again even on site, it only needs a couple of bottles of milk or whatever in door rack to prevent the locking slide switch to hook onto the pin hanging down from inside frame, when it's empty no problem even the slide hook to keep it slightly ajar for ventilation works but stick a couple on bottles I rack and it missis pin and I have to wedge door closed just in case it opens when traveling it's a dometic