Timing Woes.

[zCLR]

That is not TDC, which would be the middle mark. The other marks either side of that are for ignition advance/retard timing, using a timing light on a running engine. Mechanical timing should all be at TDC, no advance/retard.

Ok so back to beginnings before I try to blame other things, I'm confused about TDC then. He's what it looks like on my timing cover. Am I wrong to think the "T" is TDC?