RE: A4 Skyhawk build
Nice work! Hope it solves the problem for you. I've always found gear door problems to be very trial and error, just give it a go and see... How much better is it when you try and pull the door down by hand?
My solution was to use these small 5mm Neodymium magnets which are very powerful. Once the door is closed its hard to open it and the ram doesn't stand a chance especially with the spring holding the door. The smaller ram lifts the door by 10mm which is enough to release the magnets and it pops open, hopefully it will work but I'll only know for sure once its flying. All I have to gauge it by is that its far more powerful than the stock set up was at holding the door.
Cheers, Alex