I sent my RC to DBS and paid the extra $100 for them to install the upgraded antenna. I got it back and now my right control stick now has an issue. (Wasn't there prior to the upgrade)... When pulling the stick down, it seems to be snagging on something internally. Halfway down from center it "clicks" with slight resistance. Definitely suspect. I haven't flown it yet, but did do a bench test and confirmed the CSC command works and it appears to send the correct commands when running the engines. Any advice? Should I open the RC up and see if I can solve the problem?