Please refer to my youtube video on the how and the why, but while I really like this RC Jeep, I felt the OEM winch being a drum style was inappropriate and needed to be converted to capstan. I ended up pulling tiny screws from an old dead laptop to secure the winch to the bumper.
I'm also including a copy of the stock replacement bumper as nearly as I could recreate in case yours needs replacing.
The author marked this model as their own original creation.