i don't know why but all the sudden (it happened a few months ago) I can't trim down the throtle on my 9cap. The trim function only works when the throtle stick almost at the top end (full throtle), i mean only when at that stick position that i can trim up or down. this problem only happen on the throtle, not others. i have tried to fix it, first by following everything related to the trim function in the manual. when that unfruitful, i tried mechanically, by unscrew the stick base and swap it's the position by rotating the base. Can someone help me here, tq