My compressor is playing up. Turned it on to spray the next coat, ran for a while then the note changed and it kept running and running. Warily I went up to it, but the pressure gauge didn’t increase any more.
So either the pressure cut-off switch isn’t working, or there’s a leak and it can’t increase the pressure to the point it will switch off.
So something else to look at. If I can’t fix it simply, I may just get a smaller, quieter compressor. The current one is overkill for the mini guns. I bought it to match the full-sized gun I bought to start with, which is overkill for guitars.