I'm going to order one from John soon as this PMF square glide wears out. I might go to 5 flow on the Mach 15 wand also. I was cleaning with 6 flow instead of 8 today and the 370 held heat much better.
He looks tall in his picture. I bet the wand is too short for him. He needs a longer wand. Prochem Titanium or order a devastator stiff or swivel. The evolution 2" I think is long enough for tall people. I'm not fully certain