Thanks a lot man. I don't have anything on the block. No chain, tensioner, or guides.. I baugt this l20b bottom block re done from hopsing machine down here in san diego ca.. so I'm just putting everything back together from the ground up.. I'm just gaa keep studying everything amd make it right (this is gana be my daily driver once I'm done) ima post up pics of my 510 wagon build in a few days .. this timing thing is just setting me back.