That's great to hear, perseverance has paid off. I'm glad it seems like it might just be some bad contact for the joystick in the Tx causing the movement issue you were having.

If you could still take some nice pictures of what you are doing, showing the problem area, & post them here it will help future members out a lot, especially since my pictures were of the older button style controller while you have the newer joystick style controller.

Hopefully some cleaner will be enough to fix your issues. However, I might still suggest possibly considering even a very careful, but slight bending of the wipers to make sure there is solid contact all the way through the movement too.

~ Craig ~