[VMR] Lock to HMD problem


I try to create a game where we can play with VR or with screen mode.
Here is my problem:
I have create a BluePrint Character and when i use my WMR headset with steamvr plugin, the camera stay 170 cm above the caspule, and when i add hands they stay above the capsule too.
To have a good camera position , i have untick “Lock to HMD”, but the hands stay above the capsule.
Does anybody have found a solution for this ?

Thanks you,