Thank You the setup is rock solid and will give the scale speed needed for the sherman will post a vid of the running unit this week have done testing on the setup and so far it has run perfect these gear housings can also be used in the KT for more stable track control and scale speed just attach them in the same location as the plastic gear housing cove on the outside gear case on the inside then attached to the factory gearbox moved back 3/4 " and you have real gear housings with full bearing support will be doing my KT soon and will post the build