Gecolib animated item hands problem

When porting the model from the blockbench to Mcreator, there is a problem with the hands. Although everything looks as intended in Blockbench, the hands look clumsy and incorrect in the game itself, however, the weapon model is still in its place. Please help with this! I use a translator, so my question may contain errors. Sorry about that.

I'll add screenshots of the problem below: