For a long time I have used the standard rope type seal on the front timing cover to seal the crank. I have always had to pry the timing cover down onto the crank snout with a drift. No Problem. Lately, the last two times, that rope seal has just slided in with no pressure on the crank snout at all. I have tried it both soaked in oil and not. Anyway I do not get a tight seal between the crank snout and the seal. I get an oil leak. Anyone else have this problem? Any suggestions? Thanks.