I just had my rear angles checked, and the guy took a magnetic angle finder and put it on the t-case .... it read 4'. He then took the magnetic angle finder and stuck it on the pinion ... it read 10'. He told me to get a 3' shim. Wouldn't that keep my t-case at 4' and change the pinion to 7'? I though I should get something more like a 6' shim. What do you guys think? Also, shouldn't he have measured the angle of the pinion and t-case in relation to the driveshaft and not to gravity? Maybe I just don't understand how the angle finder works /forums/images/graemlins/confused.gif Thomas.