Sam, It sounds you may have worn out camshaft or a possible failed ACR. Check the valve lifts and if you have the ACR bump. The cylinder balance test results are off by more 20% indicating there is problem that area which can a simple valve adjustment, worn camshaft, or a worn cylinder. With the ACR present it should be around 65-95 psi at cranking speed and should within 20% of lowest cylinder compression. IE: Cylinder #1 65 psi Cylinder #2 78 psi.
Also when you get this engine could please either post the starter amp draw here or via a PM to me. I haven't check this here for I just got a 400 amp clamp to do this but will the next time 651 comes in but I do know the over 200 amps is at least not the normal amount. Most the engines I work draw around 75-100 amps starting when they are working right. I don't anyone here has even to check known working engine current draw as base reference line. This something I am now doing for myself as I running into several starting related problems and would know what the baselines are.