Just a Update ...... One company I contacted had a kit available for the Eq5 but that kit is for use with the software package EQMod .....Now that I contacted them with the different pulley dimensions they have put those dimensions into kit form and have put it up on there web page as a kit.
Below is the link to them and the kit ...( Standard pulley replacement )
http://www.beltingonline.com/heq6-be...rive-kit-12220
These pulleys are zero backlash and not the cheap pulleys that are a stock item on the shelf these are made to order.
I am still waiting for the Australian company to get back to us about this kit to be sold here in Australia .