So i ported and polished the heads on my 98 cobra, and after i reassembled it, the timing seems to be off, to the point were the car wont run. The cams were put in exactly the way they were taken out, the only thing i could think of was either the chains, or timing wheel (the thing that sits behind the Balancer underneath the cover). Any advice to check, or to properly set the timing, would be greatly appreciated.