There are more people on here to learn more about their trucks, seek ideas for upgrades and accessories than just to complain. It just so happens that many share the experience of sub standard cooling from their AC. For example I could never drive around in 90+ deg temps with my AC set at 73 or 74 like you do, that’s not a comfortable temperature for me, nor is the 51-54 deg I am getting out of my AC vents acceptable. Right now with the AC on Max with recirc. I just expect the AC in this new truck to provide the inside cab temp that my last 2500, F-150 and Tundra did in same outside temps. I have found that my AC blows the exact same 51-54 deg at 70 degrees outside temp as it does at 90 deg outside temps. Thank god for this heater core valve jimmy rig or I’d be miserable.