Hi, I was able to buy a Singer class 7-33 recently, ex army. The machine is a beast. Despite its age of 70, in very good condition. I'm proud of it! This machine comes with a bag of needles, marked 'SINGER 26gy'. I think this needle is for Webbing, canvas ... The needle is 76.7mm long. Does anyone know what needle type I can use for leather ??? Is any needle bar adjustment necessary for sewing leather on this machine? Thanks in advance for all the tips !!!