Bob - I was in the same boat as you during my school (and 1st season), refreshing a C car that had set for a while and that came with numerous 5+ year-old shaved RA1s (w/ about a million heat cycles) that had sat in a non-temp controlled building in West Virginia. I made them work...

But if you have other tires at your disposal you might save yourself some loopdy-loops.

I have a set of SRF take-offs that I use when I don't want to waste race rubber, you're welcome to use them for the school if you like - just email me through our ITC chain.