Another Quickshifter/gearbox Problem....sorry

After reading all the Gearbox & Quickshifter threads I cant find an answer to what's going on with my 1050RS
Riding along in 6th gear, with Cruise control on, it will suddenly flash to 5th gear on the display & shut off the Cruise (because it thinks I've changed down). Then display will go back to 6 after a little while.
The quickshifter works perfect shifting down but not always up, esp. 4-5 & 5-6.
Sometimes it is perfect, other times it will not shift gear till I pull the clutch or roll the throttle
So I think it is a Gear Position sensor issue & quickshifter problem as well, but not sure what I can do about it
Any ideas?
went in for a Demo on a KTM 1290 SD GT....but the trade in for the Speedy is just too painful, offered $8K !