Joeeagle,

You are correct - the SWB arms will not work. The spacing of the holes on the SWB" arms are such that you either tear through the skin of the wing or don't have enough throw. You need an arm with metric spacing, the plastic JR servo arms will work but be careful not too trim too much off the end.

It looks to me that they did not update the servo mount for the new UL wings. I notified them of the issue but haven't noticed a change in design. At the very least they could provide a custom arm like BVM does with the ultra-bandit.

Good luck,

Phil