power valve size

Looks like one of the power valves was damaged. I probably messed it up some how when I was trying to adjust it. I’m more like a monkey in a china shop then a bull. But orielley’s had a couple 3.5 power valves on hand. I swapped them out an adjusted the mix screws some and it’s back up and running again. I would actually like to take it in an have it professionally tuned. But I did get a a/f gauge so I will install it and try my hand at tuning it first. Thanks again