Has anyone changed the small belt on the head unit? Mine is dry rotting and cracking. I ordered and received the new belt from stillen but I do not see a way to change it without removing the head unit to do so... I can get to the nut to allow the tensioner to move but the tensioner adjustment bolt I have no idea how to access. Please if you have any tricks to share it would be greatly appreciated, I really don't want to have to pull the head unit just to change the belt. Thanks in advance!