For a while I have been having a problem with my lifters bleeding down on my 86T. Normally if it sits over night or a couple of hours. Just wondering what would cause this and how to fix it. I have no idea of the make of lifters. I bought them from Poston's they can in a plain white box and were sold as high rev lifters. I have bought a set of Harland Sharp adjustables and wondering if this might cure my problem?