Now, I know we all run them... but , my question is, WHY? I run a solid roller,I run a button that I set at build, but, now, my inquiriry is this, WHY? Been there 4 years. Last week, I spent about a half an hour looking at cam and distributor gears and have decided that the gear on the cam pulls the camshaft to the rear of the engine block by way of the distributor and oil pump , againt the Torrington Bearing, between the cam and the front of the block. What would make the camshaft want to move forward? Is there something to ask my machinist... or should I give A S? Been about 15 years on two engines...Just Askin...Thanks for your time, Jack.