Blockbench custom armor parts change size in-game

Im having issues regarding a custom armor moddeled in blockbench. After exporting it as a modded entity several parts very obviously change in size. Animations and everything works as normal , just several parts shrink. The weird part abou it is that when i convert it into a geckolib model it stays exactly as it should. I would appreciate anyone with insight on this problem.Im using the latest snapshot 2023 if it matters.