I have replaced the x and y bearing blocks on a fadal 4020a. While inspecting the blocks it looks as though you could replace the seals and they both would be fine. Does anyone know who carries these seals and bearings. Also while pulling the block on the y axis we messed up the plastic (I want to call it a seal but it doesn't seal anything) bushing with the end of the screw. Its the bushing that the way oil runs into. Where does a guy find one of those? The bushing happens to be threaded like the screw. I could make a new one myself if I can't locate a replacement but all I can seem to find out about the screw is its a 40mm. Does anyone happen to know the thread of the screw? Thank you very much for any input on these questions.