Reply to Crossfader problems

I got my VCI-100 SE sometime in early Feb of this year from DJ TechTools. I have been scratching with it for awhile (setting the C.F. curve to the far left and moving the crossfader while scratching on the jog wheel).

Lately, I notice that whenever the crossfader in the far-most right position, it tends to pull back to the left even if I haven't touched it. It quickly jerks back to the left when the crossfader is all the way to the far right. I can scratch, but it's not as accurate as before (basically more unnecessary scratches).

I have tried lubricating the crossfader twice, but no luck. Help, please! =/