i have jano's cossie managment on mine. i also have about a 8-10mm gap between pulley and chassis. i changed my belts fine a few weeks ago. when i last took the pulley off i droped the engine down. but i had problems about a year ago when my enine mount was so worn i had 2-4mm clearance between pulley and chassis leg. so check that your mounts in good condition also.