I replaced my two phasers and VCT’s. On the right hand side, passenger side I had no issues but on the left-hand side, driver side I used the R on the old phaser as a reference and marked the chain. I then installed the new one with the R in the same position but I lost my chain mark so had to...

I replaced the distributor and forgot to mark or check where everything was positioned before doing so. Do I need to completely reset the timing? Or is there a way to simply just set the timing of the distributor? If I end up having to reset the timing completely can I find TDC by removing the...