I bought a transmission from John at CRT, back in 2004 or 2005. I adjusted mine after about 20 to 25 runs. Adjustment barely changed. I did change my fluid and filter every 25 to 35 runs. I checked band adjustment every time I changed the fluid and filter. It never changed much after the 1st time. After 2 years, the tranny was freshened up by John at CRT.
I ran it for 4 or 5 more years with the aluminum drum. Last year I had it rebuilt, and we installed A steel billet drum. It runs the same et's and m.p.h. But I don't have to change the fluid and filter as often, or adjust the bands . I changed the fluid once this year, when I tried a different converter.