I have a working Pennant Fever and if I can assist you in any way, I will. I guess I was lucky on my machine when I got it working again over 10 years ago. Most of the issues were mechanical, cabinet, fuses and of course the light connectors. I did replace the connectors for the lights and that has helped tremendously, if you still need a source, let me know and I will look through my files for the company. My bat assembly was mechanically a mess and I was able to outsource many of the parts and was able to fix it. As far as the rheostat, I think they are still available if you search the internet. Anyway, let me know if you need any photos, part numbers, etc.