Mismatched caliper pistons???

Hey All,

I have a set of 73-76 calipers that I got for my drum to disc upgrade on my 68 Valiant. They are rebuilds that I got a few years back, but just now getting to the upgrade. Anyhow, one of the calipers has a metal piston in it, the other has one of those phenolic type pistons in it. Had I noticed that originally I'd have got a different set. Ain't no taking them back now.

Big deal? No prob? I don't much like it, but is it really an issue?

Thanks,

CE