Issue with crouch height

I have a first person character without any physical appearance. He can crouch correctly, but the height its too big.

I have a vent model and I need that the character is able to walk inside it when crouch; but I can’t because the height is to big and I cand change it to reduce

I tried changing the Crouched Half Height and Crouched eye height values, but nothing the height is the same

The radius of the collision capsule is probably too large. Ive noticed that it is gigantic in the blueprint templates because Epic didnt want the gun to clip through objects. I would suggest changing it to around 32 or so.