Been a while and wanted to follow up. I have everything and ready to get started. Decided to pick a few fitting and a stick of 3/4 to test and practice. I have all Uponor pipe, rings and fittings. I am using the M12 tool and was surprise how little time you have to get the fitting on. I read the Uponor install manuals and for the M12 and 3/4 it says 9 expansions. I find I need to do at least 12 to give me any chance of getting the fitting all the way in. A few I get real close the the should, but there is a smidge maybe 1/32 inch off the should. The fitting looks well positioned as the main center barb is far from the edge of the pipe, but I am a bit nervous and wondering if I should shift to PEX-B with cinch clamps or just use B fittings and cinch ring on Uponor to keep the flexibility. There are several areas in am wondering how I am going to maneuver with the too, and get the connect quickly enough. I don’t have the best dexterity in my hands. I tried the one handed method, but still at least 3-4 of the 6 tests I was about 1/32 maybe 1/16 off the shoulder.