Although I haven't tried it, you could probably take some teflon tape and wrap it around the shaft before you put the knob on.
I have and teflon tape works great. Be careful with those split shafts, they can break if too much force is used.
If you can SMELL teh superglue its not dry yet!!!
superdead!
Don't try to pry the split shaft apart. It breaks really easily. Just put a small piece of masking tape on the shaft and stick the knob back on.