[Walter White]

I have a little experience with drive chains monitored by electronics, in printing presses. The computer in the printing press would time the chain movement and throw an error if it didn't like the chain movement.

There would be a number of possible things that could be wrong with the chain drive. The chains do stretch, mostly by wear in the roller links. Sometimes a link will get stiff and not bend enough. The teeth on the sprocket wear too, sometimes enough to cause an error. The sprocket teeth actually develop a hook shape when worn too much. And sometimes we couldn't find anything wrong with the chain, the computer just wanted a new one installed.

Another thing I wanted to add. Make sure you have cleaned and reconnected all grounding straps. It is easy to forget one or two of them, and your computer may not read sensors correctly with a missing or poorly connected ground strap.