So I went about changing the oil and filter in my TH700R4. Little did I suspect it'd turn my mood from pretty good to downright sour. I don't know if the previous owner forgot to coat it with oil before putting it in, or if he just never changed it at all for the last 20 years, but it is literally like glued to the bore! I've been under the car for half an hour prying away at it with differently shaped awls, with ATF dripping in my face and a vacuum cleaner hose to keep the little bits I've been able to pick out from contaminating the tranny, and this is how far I've gotten: http://img205.imageshack.us/img205/7578/pb270454ty8.jpg There's no reasonable way I can get the remainder of the seal out by just continuing to scratch with an awl. Besides, I'm afraid to do damage to the bore. I'm thinking I need a miracle solvent I can apply that will cause the rubber to come loose. Does anybody have a good suggestion on what might work? I've tried plain degreasing fluid, but that didn't help much. Any other suggestions whatsoever are welcome at this point. Anybody else ever had this problem with this seal? If I had known how much trouble the old seal would cause me trying to get it it out I might've just kept it in, but there was hardly a way for me to know it would be so damn stuck without spoiling it in the process of finding that very fact out... By the way, theoretically, besides the obvious fact that unfiltered oil could sip through if I caused damage to the seal part of the bore, could scratches in the bore have any other negative effect? Maybe I've been overly cautious so far, but I'd rather not hurt anything.