Resin parts are more fragile that standard plastic, although I do drill some of my parts for my own builds. I do so cautiously and slow as you should to. Resin can warp in extreme temps... I have no control during shipping, but rest assured I do everything I can to work with my customers through any problems. Just reach out! Do research on Resin parts if need to or message me on IG 3DToyland. please send pictures of your builds!