I'm hoping this is the right location to post this question.

I recently built my CNC Router Parts 4896 Pro and I made my dust shoe that is on their website.

Universal CNC Dust Shoe | CNCRouterParts

The top piece of material started out as a 1" piece of HDPE and after being machined it is about 3/8" thick. After I finished mine looks great except for the fact that the top section bows up so the bottom piece wont snap into place.

My question is can I use some heat to straighten / flatten the HDPE or do I need to start over?

Thanks
Gary