tx gps

It appears that I have a hardware failure in a very low time TX. The right stick will not calibrate or function when the stick is moved forward or backward. Recalibration confirms this as the blue line will not illuminate for these 2 stick inputs. Has anyone ever replaced the stick module in...

I'm a old heli RC polot - and had a PV2+ (sold due to lag - lack of light bridge), lack of follow me and decent waypoint automation... and recently acquired a 3 pro. I'm I shoot catamarans over water (racing) and did some with the V2+ but the lag scared me. (didn't want to hit a boat or sail)...