i blew up last summer and just got the new rebuilt motor(.20 over JE pistons eagle rods)back in the car with a hahn 20g turbo... heres the problem. i keep leaking form the front main seal. i tried 2 oil pumps, and 5 differnt seals nothing is working.. i had the whole rotation assembally balenced. does the harmenic balencer have to be on to hold the seal in ?? any info is help i have been fighting with this for months thanks-----mike