Mellotronists

Has anyone tried any rubber rejuvenators on the rollers?

I was on http://www.caig.com and noticed stuff called CaiKleen RBR 
that's mostly for the little rubber drive wheels on fax machines and 
printers (and typewriter platens, if anyone remembers what those 
are :-) ).  Has anyone tried stuff like this on the pinch rollers?

...kl...M400 #805 (rollin' rollin' rollin')