Primary on my 88 E glide has been leaking for a while so decided to replace the gasket and when draining the oil noticed it was black so my first thought is the crankcase oil seal, its also my understanding that the 2 small screws that hold the stator wires can also leak, no huge discrepancy in fluid levels, was wonder if I can apply pressure to the crankcase through the breather with my air compressor (Bottom breather) to see were the leak is, bike only has 21,000 miles and don't want to remove the oil seal if I don't need to.