Im thinking the CRT he is using in that avatar is the one he cam and picked up from me, from a scrapped GE. good CRT
As far as warped plastic, the best for that is to "heat press" it. get some strong humidity/steam up the wheel to a high temperature and press it. and leave it pressed as the wheel cools down for the longest time period. I had to do this for my peter yatzcer wheel. hehe...
P.S. the wheel operates at a very low RPM, its hardly audiable. unless its scratching against something of course, or if the motor is shot.