[YOSLVR442]

just make sure that the bores are fine, they feel smooth to the touch. as long as there are no rusting spots and everything feels good then you shouldnt worry. the fact that you stored it upside down under a tarp is good thing. the best is to put it into a big garbage bag and tie it tight. Ive done that with a couple bare blocks and they have always been good to go after several months.