The original rear seal on my stock 65 has a flange on it. When it was pressed in, it sat flush with the rear tail section. My new seal from Sunbeam Specialties does not have a flange. My question is, should I press the seal in so that it is flush with the rear tail section OR do I seat it all the way in until it seats which will recess the seal into the seal cavity approx 1/8" BELOW the surface of the real tail section? My uneducated guess is that it doesnt matter! Any experts out there? If so, please provide a reason. Thanks!