Usually a light sanding of the wheel surface and a good rubbing with lacquer
thinner will do the job getting idler wheels "sticky" again.
"NSM" wrote in message
news:RCoGd.101130$dv1.12772@edtnps89...
Sometimes you can 'revive' the wheel but with nasty chemicals. I bet you
can't buy the proper dope any more!
N
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