this has been covered in 437483 other threads and i believe the conclusion that those other threads came to is that, the compressor wheel, and the turbine shaft are balanced individually, period. Hence if they are balanced out right, it won't matter which orientation you place them in, because they're perfectly balanced. Least for our half *** setups it doesn't matter. If i were rebuilding something like a Precision SC61 yeah i'd have it balanced, but for a regular T3 that you paid less than 250 for, just run it.