Originally Posted by
JayB
Thanks for the advice. If I did this I would presumably want to start with a new timing crank ring as then it would help me see how far I need to bend the spider arm to get proper alignment. I have 42T black timing rings so presumably I want the ones with no ramps or pins.
You should be able to measure out from the boom tube to each of the four unbent tabs on your timing ring to establish how far you need to move the bent tab without even removing it from the tandem.
It doesn't matter if you have ramps and pins on the rings; they don't help or hurt.