I have completely modified my block on my ej20. Manely rods wiesco pistons acl bearings bored block the works only thing stock is crank. Im having two continuous problems. 1) I have changed my rear seal three times and its the same thing a tear on the left side of the seal and all my oil leaks out. 2) my oil pressure is low its between 13 and 15 psi on idle. i even bought a 12mm oil pump but still the same thing. Please guys any sugguestions is greatly appreciated.