so ive got oil spraying everywhere from the harmonic balancer (that is attached to the crank shaft from my understanding) its the lowest pulley. its hard to tell if its coming from the oil pan gasket or the pulley but its only coming from the center front so my guess is the pulley. anwyays has anyone ever done this job? do you need a gear puller to get that pulley off? is there even enough clearance in there? also is there any special tool for replacing the seal? is It hard to replace? easy? has anyone else ever done this job? my other worry is that its dripping down from the head-gasket and hitting the crank shaft but its soo hard to tell. but I felt the gasket all around and it feels okay. my engine has so much old oil built up on it because it has had a head-gasket leak for years (already fixed that) any advice on this job would be welcomed!