Anyone have any experience with this company? I purchased a complete long block including lots of extras. With less than 50 miles it started to shutter, dash lit up like a Christmas tree and now cylinder 4 and 7 have 0 PSI. Well I take part of that back, Cylinder 4 did jump up to 120 once but cannot get a reading anymore. There was no loud bang or anything like it dropped a valve seat like I have read about. Would bad MDS lifters cause something like this?