Milkey,
Ya know...if you hold the square side, parallel to your cut line, the foot of that saw-zall can slide against the square, giving you a square cut...(given the blade you've got isn't bent, and you go slow keeping it cutting square)
Where's the pics milkey?
Hope you got your car fixed. If not, you spending all your time, effort and money on these tanks shows you truly are a monster fish keeper. Your nuts man.