my 95 2500 with 148k miles has developed the tell tale signs of a faulty tps. slow to lock, unable to hold lock, and downshifting out of od at inoportune times. has anyone disassembled a tps? i would like to try, but without any knowledge my method would probably involve a ball pin hammer. also. i've seen mention of weep holes, but i don't see any on mine that actually go all the way to the inside. if disassembly is not possible, who has the best price ?