Handtracking - Small hands

Hello!
I've been developing for Quest Pro and strictly using passthrough with handtracking. I can't get over how small the handmesh is compared to my hands. I've never realised how poor this scale of the handmesh actually is because in VR you can't compare. But I feel like the fingers are always 1-2cm shorter than my real hands and this really affects the experience. 
I've tried playing around and modifying the "handscale" factor and bumping that up a bit. But after a while you start to have Mickey mouse hands before the fingers are long enough.
Does anyone have a good solution to this or is it possible to use more raw handtracking data and perform my own solution? Cheers