mir, I posted in another thread that my setup was like yours
Win 7 64 bit , CH manager , CH USB HOTAS ( fighter stick, throttle, pedals )
I forgot to mention that I only use the CH Manager to see and connect my devices as one, then I use the keymapping and controller mapping provided by Aces High ( side note- I have a few templates saved in CH Manager to where I can program macros to certian buttons , like we could do back in CH Speed Keys for old analog CH equipment.........but hardly ever use these anymore )
Murdr suggested this to me a while back........ might be worth trying........
also it might be your key/button or the pot to it has some dirt, trash, is gummed up causing it to stick........ getting some electrical/electronic contacts cleaner to spray it might help......... another suggestion......