VCI-400 EGE pitch control slider

I have never used them because they are so unpredictable. Slight adjustment changes the bpm drastically, then must slam fader to top or bottom to get back to original speed. Had problems with the speed crawling down for no reason before I upgraded to 2.6. Thought eventually an upgrade or something would come along so i could use these but to no avail.
I thought maybe it was a feature I was unaware of so I tried adjusting it while one song was in master sync but no rhyme or reason was found. Still locks up every time I exit. I guess I just got too busy doing gigs to keep coming here fore help. I make sure the pitch faders are set in the middle before I turn the controller on and never touch them again and the machine performs well. I force shutdown at the end of the evening and go on to the next gig. It just seems silly I work on a controller that I can't fully use evening after evening . I like it, it def. fits my style but I wish I could use it fully.