Yeah the 12mm. I just bought the whole tensioner set off eBay for $9. But I've gotta take head back off and get another guide anyways. Was hoping to fire her up this weekend. Oh well :(
I have to order a new timing chain tensioner bolt. Spec called out to torque to 29lbs and it snapped. I'm guessing previous owner tightened the hell out if it. Was a B to get loose.