olla
many guys here in israel had/have the bobcat
i my self have the fly-king 120

when u set flaps you should set some UP ELEV as well!!!!
3-5 dergee and from flight to flight you modify as you need.

i think that because the wing is sweep backwards, the falp factor can do soem problems...

start with 10% flap and add more % from flight to flight untill you find the correct % u need
again , you do need to add some UP ELEV!!!

hope this helps

send video so we can all see

enjoy