I'm having a hard time locating the white plastic liner and spacer that sandwiches the aluminum plates and tiller. I found some clear Lexan that is almost the right size for the plates. I'm sure for the spacer I could find a stainless or aluminum piece that would do the job. So, my questines are, will Lexan work, and if not where can I get the origional material and what type of plastic is it? While on the subject, what is the best way to get the scratches out of the aluminum tiller? Thanx. alan