Resin question

I have some Verlinden resin control surfaces for my A-24 that I recently noticed are a bit on the warped side. No twisting, thankfully. But , I was wondering if there was any tried and true method for squaring something like this up? Thanks in advance for the help.

I have heard that the best way to straighten them is to place them in hot water for about 30 seconds a then placing them on a flat surface and gently press down.It may be necessary to repeat the process if the first time does not do the trick.Work slowly and carefully and you should be able to iron this problem out!

Heat some water in your microwave to about 180 F then soak the part in that for a few minutes holding the part with tweezers. While you are doing this allow some cold water to be running in your sink (make sure there is a catch in the drain in case you drop something). Take out from the hot water and gently bend it to the correct shape then hold it under the cold water for a minute. For severe warpage you may have to repeat this a couple times moving in small stages to the correct shape. If you try to bend too much too fast you can snap the part.

Hair dryer also do the job.
After finishing you can drill a hole all over and insert a metal wire for future resin wraping