I have installed all of the return rollers on my Tamiya Sherman but they don't seem to roll very freely. If I back off the nuts used to hold the rollers to the "frame" then the entire assembly seems to loose. How tight should the rollers be? Shouldn't they spin fairly freely, mine just seem quite stiff.

Also, I tried using some Tenax R7, or whatever it is called, on the suspension components but it just didn't hold the plastic to the metal well at all so I have switched back to CA for the metal to plastic bonds; what adhesive have you guys used in those situations?

Thanks for any input!

Jeremy