Hi Joe, Welcome to "Tinkering with Toros". Dave Wallace and myself have been talking about modifying the timing on a Toro. Last week I used a timing light on one, but I wasn't running it, I was spinning it with a Sullivan 24 volt starter, in the basement, and I really couldn't tell what was going on. I actually have two timing lights and they were not responding the same, so I gave up. I suppose you were running yours for your test? From emailing this subject with Dave and from a couple of things he mentioned and looking at how the engine is set up, I was wondering how it runs in the first place. If they have something extra built into the magneto, that would explain a lot. I have had a suspicion about that possibility since last year when I used an ohmmeter to compare a few Magnetos and could not tell much, I would have thought they were junk, but the engines for them run. I was getting ready to test run the 2 bbl engine with the Walbro and conversion plate on it tomorrow with the flywheel advanced a bit more than the width of the keyway and now you have me thinking this over. Now I am also wondering if a search on Magneto design will turn up anything.