The Hooben adjustable idlers were replaced with a Henntec T-72 unit. Because of the Henntec I had to cut off the mudflaps it used to have as they impacted the tracks when the tracks were properly tensioned. The aluminum angle is used to brace the front end. I reused the vinyl tracks as my plan to use Leopard tracks failed. The Leo tracks from HL are wider and will not fit under the track skirts.