You're not bushed with MRL(BAM) lifters is why you have low oil pressure at idle I beat. I have the same issue. I am being tear down this weekend. I talked to Ryan at shady dell, he has see this with these lifters. He told me pull the intake and distributor, prime the motor and turn it over at the same time and watch the lifters specially the rear ones on the bottom side. He said he has see the oils just poor out there. If this is true just go with the Comp 828 solid body. I will report back.