Hello all! I am in need of the counter belt mainly for my Panny 7700. It's slipping and throwing off cassette player mechanism. It abruptly stops while playing tapes of various lengths and brands. It always stops right when counter changes from 99 to 100, 199 to 200, etc. I believe the main drive belt is ok now but wouldn't getting a spare so when this one fails, I have one. Appreciate any help for sources of belts. Thanks!