i hated to but had to turn drums because the linings delaminated. my worst drum is now 12.015. i think this is still ok. upon tryin to adjust front shoes, i can get the rear shoe on the driver side to contact drum but cant forward drum to contact drum no matter where i position the arrow located on the eccectrinc cam or pivot bolt. i put new everything and am wondering if i should completley bleed system and then adjust. i bought parts from roberts in mass. they come highly recommended so it must be something im doing wrong.