Just wondering if anyone knows if I can remove my 2 friction pads, clean them, and then refit them. As they appear identical front and back could I also swap them over while in the process as the front pad seems more shiny/worn than the back, although difficult to see either clearly while crawling underneath of from phone photos I attempted! I have tried brake cleaner spray but this is also diff to administer and I use this to keep the towball clean after trips. Done very little towing since last service and was declared still good at that time and the wear indicator still shows good when hitched.