on the FRONT head, which direction should the arrow on the cam chain guide point? towards the front of the bike (thats how it was when i took it off) or towards the 'V'? it says it should point in the direction of the intake, and i believe that is toward the 'V', but i dont know why it was pointing toward the front of the bike... also, camshaft holders, are front and rear interchangeable? i broke a valve cover bolt off in the cam holder (front left), and ordered some from an ebay seller, now i am wondering if it matters if i get sent front or rear ones what a shit weekend