I'm looking at installing a new cam. I have a service manual and all the tools. What is the procedure to cut the push-rods and replace them with adjustable ones? Can I reuse the push-rod tubes or will I need to get new ones? Will any adjustable push-rod work? Or is it better to pull the rocker covers and arms. I'm just looking for a detailed parts and service procedure and I know that if I ask you will show me the way. Looking at the andrews 37H buy the way!