I donโt have a super motor. But I do have a 33 locomotive that I do occasionally run when I have my standard gauge set up. Iโll be the first to say that the coasting that your 33 does is normal. Pretty much all 33 locomotives are fairly lightweight in the realm of Standard gauge trains. They donโt have very much meat on their bones like the zinc wheels, cast iron wheels, thick motor frames, etc. So I would not worry about the coasting. I donโt have a super motor to run, but I would say that it stops on a dime because itโs a lot more heavy than the 33.
Trainfam