Razor weld machine torch

I have a razor weld 45 machine torch that came with my crossfire pro and I’m running the prime weld cut 60 with everything Iv read says there only one nozzle size so does that mean I can only run 45 amps on this torch and I would have to switch back to my hand torch to run 60 amps and how’s doe sit run for thinner steel since there only 1 nozzle size there again would I better off going back to the hand torch for cutting thinner since I have all the nozzle sizes for the hand torch

There is 2 sizes, 30 and 45 amp that is all you get.