I have a 2010 LTX1042 Cub Cadet. Recently I was changing the mower deck drive belt (apparently not paying attention to how the idler pulley components were assembled). Anyhow, I can't figure out how the L-shaped bracket in pics 1 and 2 fits into the scheme of things or what its purpose is. I've looked at the Illustrated Parts Manual for my tractor but this part doesn't appear. Pic 3 shows one possible configuration, but I'm not sure this is correct. Anyone?