Welcome to Apug. My experience with OM's is extensive, starting with the FTL (Pre OM-1), and all models except the OM-3. I purchased a pair of OM-10's when first intro'ed, and they didn't last much more than a year before they met their demise. My recommendation, junk them and buy an OM-2n if you want AE function, or an OM-1n for manual only. The internal parts of the 10's are cheaply made intro models and it's surprising as many lasted as long as they have. OM-4's are inexpensive these days, and the metering system is one of the best ever built into a 35mm SLR, I highly recommend you get one and forget the toy 10.