S13 cam gears are installed, Car has been set to factory timing marks and Cam angle sensor has been installed and rotated to its proper position, The only problem I face now is the Valve cover seems to be hitting on the Rocker Arm stoppers? It has a lip on the inside of the Valve cover that hangs down like 2 inchs, This lip hits the rocker arm stoppers and wont let the intake side of the Valve cover sit properly...It looks as though I will have to cut it out or grind down....Any thoughts.?