GE Stove Knob Plastic Backplate Mount Replacement/Reversal

I can't tell you how many countless of these knobs our kids have broken over the years because we have a heavy cast iron skillet that sits next to them and when the kids pull it off, they inevitably bump the knobs and they break. I've bought them over and over and I'm sick of it so I just modeled the plastic piece that keeps breaking. I've also made the little "washer" removable because another problem we have is that when they come from Amazon the orientation is always reversed and because of the molded "washer" they always sit crooked when reversed. If you have this problem you'll know what I mean.

I've uploaded the step file in case you need to make any modifications for tolerances. I printed them in ASA with X and Y at 100.08% and Z at 100.04% to account for shrinkage but your mileage may vary.