RE: Showtime for Pattern flying?
I've been helping a local friend of mine with this airplane and he had some serious weird things happening similar to what you guys are.
In looking over the plane I found that the stab tube had loosened in the fuse and in both stabs as well.
I could move by hand the stab leading edge up and down at least 3/4 of an inch.
After he fixed everything, most of the strange trim changes unsurprisingly.....went away!
The servo gears were another problem.....those big control surfaces just eat up the gears in no time.
The plastic geared servos will last a lot longer.