Figured it out, my bust. I thought I had pressure checked both lines, but apparently only checked the oxygen side - my acetylene line (hose) has a leak. Apparently the guy I bought it off of failed to mention this
Can't complain too much: $150 for a Harris torch head, Harris Acetylene reg, Firepower Oxy reg, mid size oxy & acetylene tanks, and a cart isn't too bad.
Guess I will be looking for a new hose set.
Gordo