Sorry to bring up such an old topic but I figured there is no point in starting a new topic on this issue. Well I had a similar issue. I have had my Fuze for years now and was recently having issues with the wheel as well.
I was going to try alcohol as it wont hurt electronics in a small dose but its not a good lubricant. I then got an idea. I have this oil specifically for my electric razor, as it sometimes needs to be oiled similar to a shredder once in a while. It's a very small bottle that I can slowly dab a few drops and then spin the wheel with a tissue and spun it for a while back and forth for a good minute and it seemed to have fixed the problem for now. It wont hurt the electronics as it is used for my electronic razor and is meant as a oil/lubricant for it.
So I hope maybe this helps some people out there in the future with this issue. I'll make any updates if there is problems again or if it does not hold long.