Issue with males arm

[rat31]

Hello dear comrades!

If it not difficult for you, please, could you give me a hint, whats problem with my character arm? It became short, and I have tried almost everything, but did not succeed to fix it. It(arm) became shorter, after my experimentation of body text and meshes(I was looking the best for me and tried different body mods). But after deleting males meshes and textures - in(arm) did not become the same(vanilla). The point is that if I start the new game - everything tip-top, but it is really pitiful to start game anew .