That's pretty much the same one as I have!..... The, 'Bar-Pressure', has always been terrible...Even from new. I had better results, with the 'Compressed', air cans........ Fortunatley, my neighbour, is a 'Commercial', sprayer of car body work!........., (You don't want to hear what he said about it )! However! I would suggest, (as he advised)! looking away from modeling-compressors, and look at the options, in the 'Auto Trade', as you can turn the pressure way down or up dependent upon what you need. However! the size will be a factor! but there are powerful, yet smaller/compact compressors out there. But they will be much bigger than what we have. It boils down to the simple question, of how much will you use it?
Regards,
Mark.