HI, with a JR12x, first you must mate the ail. One side uses ail. ,the other side, uses a free channel in # 22( wing type)
Second, go to program. mix, 4, is good
third, use Flap to FPRN
I have point -L in=0 out=+69
point-1= in=50 out=0
point-h=in=100 out =0

i get about 5/8'' up crow with full flaps
Rcpete