OJ's thread got me thinking as my air pressure has always been low in this shop. I have always had low pressure but haven't taken the time to sort it out. OJ mentioned a cheap regulator and I have one that's redundant anyway, so since I was going to take that one out I thought it'd be a good idea to get hi flow connectors. I tried drilling out the ones I had and after a bit of work found that they would no longer couple correctly to the quick disconnects I had. Investigation showed that the high flow connectors have proprietary disconnects and connectors, as I am in a hurry I bought these from harbour fright. Long story short, my air pressure went from 14lbs to 28lbs at the sata 2000hvlp gun, trigger held until stabilized, tank regulator full open on circuit one which is the hose I've always used and best for reference. So my compressor will now hold that constantly. I feel much better, the 3000rp holds steady at about 32lbs+. I removed all connectors I could, making direct connections with hoses instead of quick connects, changed all connectors left to HF which have prob a 50% bigger hole. I now have on my paint circuit a single regulator on the dessicant filter which I regulate to max flow at the gun so I don't get a big surge when pulling the trigger. Just wanted to share as this $100 is the some of the best money I've spent in the shop. That said, if you do this, look at other brands too as the HF brand is actually twice the cost of the brand at Summit Auto and may not be as durable although they do seem to be made very well.