I am readjusting my rollers and I intend on following the listed procedure on this site but my question is in general for one point,  is the engine doing the same thing for each revolution or is it every other rev?  Start with #1 cylinder, rotate the engine until the balancer reads TDC on the compression stroke (that is the next TDC rotation AFTER the intake valve opens) . I dont understand how you can have 2 TDCs for a cylinder.  Is it refering to the fact that after compression it is still close to TDC?  You start on the balancer in the guide, but that only works for #1? Right?  So after that I am just looking for the either one of the valves to do the same as whats experienced with #1?  My thoughts are on any one cylinder as soon as either valve begins to open the opposite (closed) valve can accurately be tightened.  Please (anyone adding input) bear with me I'm trying to learn this accurately and thoroughly the first time.  My cam is the crower stage 2   15511 so its not that aggressive.