Tandberg Series 15 reel-to-reel drive belt

... I've lightly sanded the very polished rubber transfer wheel, which has made it run at the proper speed now...

Hello,

new to the forum. I recently picked up a Tandberg Model 15 very cheap and everything seems ok other than the rubber transfer wheel. I can see the material has perished and is "bobbly" (for want of a better word).

Can you let me know how you (or anyone else of course) cleaned that wheel, I can see the tape getting held up there and the speeds not running properly due to that rubber wheel.

Thank you.
Ben.