yup,
over the years, several different attempts have been made at making new steel rollers and plastic ones,
with one tucker i bought, i got a set of new metal rollers in kit form, looked pretty good, but expensive to make and assemble, the prices have ranged from low end of $40.00 ( chinese made ) to $!25.00 excellent high end/ done correctly,
seen the plastic rollers, that Bill G. @ sno trans made many years ago, on a couple of tuckers, they seemed to have worked okay when only replacing only a few rollers on a pontoon, way less expensive to replace, also seen what a few others have made out of UMHW, they did not hold up very well at all
we, at tuckerville, also are trying to see what can be done to solve this issue for reasonable money, at 248 rollers per standard 443 machine, that turns into some serious money very quickly
you should ask the guy formerly known as boggie, he may have an source and or answers/opinions