I would say that if you are useing retracts, to sand the clevis insides to allow it to slid easy on steering part of retract. I also noticed that the intakes could flex at the joint so I tack glued some medium CA to joint area. You can always use a razor knife to cut that area if you need to remove wing.Mine balanced at
4 and 1/16 from leading edge of wing with NO additional weight added anywhere.
Should get test flight and video tommorro evening. Cant wait to see what 3000 watts does!