erratic timing on 360

The shaft for the oil pump was raising and lowering. A collar shaft locks the iISHAFT AGAINST THE SDIST SHAFT SO IT CANNOT GO UP AND DOWN ANY MORE. If it goes up and down it will definately affect the timong because it is a spiral gear mated to the cam so it will advance and retard as it does it. On a dist machine it locks the shaft and housing in no bouncing. I would look at cloys or a similar brand for the timing set. You will spend 100 on a quality set for sure.