Need someone to redo R15 character joints

I'm looking for someone who can set up a custom R15 rig in roblox studio. I've got a near exact copy of a standard rig except It requires extra work on the hands and feet joints. This means creating new Motor6D joints and attachment points in places identical on a standard rig so that it moves in the same way.

Must have a good understanding of roblox rigs for the task, if you can prove you know what you're doing I'll pay half upfront.