As long as the paint doesn't restrict any movement it'll be fine. Generally none of the internals of a rear roller were ever painted and as such these have lasted how long ?

I'm sure unpainted they'll last another lifetime, but just douse it all in light oil during assembly..

Cheers,
BB.

I live a 24 Hour lifestyle, but every now and again I seem to fall asleep, well at least that's what my wife tells me.