I also have a T-pro. definetley upgrade to a back freewheel or cassette and run a surly or plazmatic Cog on the front. If you've got that back wheel with the crappy little hedgehogs in it, get rid of it . Me and my mate smashed the hell of one yesterday., great fun, but is avery weak wheel, is heavy and looks crap. Get a try-all or viz rim.