The side pnls for the back of my 61 AH 3000 are shot. I've been trying to fabricate some replacements. The old ones were made of some kind of thin plastic and when I took them off they completely crumbled into little pieces. Have any of you done this project? What did you use? Where did you get it from? I have to make this work because the ones I've seen in ordering catalogs are way to $ rich $ for my blood.