My Dad was a left hand Sawyer way back when Georgia-Pacific Alcolu, S.C. had two Salem headrig. Unbelievable speed they both were powered by steam, 6ft bandmill.
Should of cut more 8/4 off that. Shim the side open it more then take the 8 instead of the 4. When you take the 4/4 first then the 8/4 you are too deep into the log and risk the chance of the backside grade falling apart.
Band saws are set up different.. no arbor or collars so support the saw. Just strain from the band mill and saw guides to keep saw from snaking. If over fed to fast you run risk of pushing saw off the wheels