I've had my 1530 running now for about 4 months. The 10HP vacuum that came standard is not enough power. From what I've read, most 5x10 machines have a 20HP vacuum system. My thought is to buy another vacuum exactly like the one I have and run them together to double the hold down power. Just thought I'd check here before pulling the trigger. My other issue is that I've got a 30AMP breaker to the machine that trips every once in awhile right when I turn the vacuum on. I suppose I could go to a 40AMP breaker, but I worry about damaging the machine? I was thinking I should get a variable frequency drive for the vacuum so I don't get the spikes at startup.