Starter engaged while driving

[ArdWrknTrk]

It surely does sound like your ignition module was retarded all the time.
In fact, that's one way to tell that your start retard function is actually working.

If you had it set at 13° before then I would definitely be concerned, because the one millisecond delay should work out to about 3-4° according to Gary.
16° might be a bit much now.
Keep an ear out for rattle when tipping in the throttle from cruise.

[Gary Lewis]

Yes, it does sound like the module was retarded.  (Pun intended.  )

And, I agree you'd better check what you have now for the initial timing as you might have too much.  However, if it is really at 16 I'd expect it to kick back on starting w/o the retard feature hooked up, so maybe it isn't advanced that far.

[ArdWrknTrk]

But the start retard feature will be hooked up....  

So it's going to be no different than it was before, except the timing advances 3-4° once the key is let off.

[ScubaSteve]

Checked the timing last night and as I suspected it was at 17deg. I reset to 10deg. and will start running it up a few degrees at a time and test driving. It seeems to like 13deg. but im going to run it up a little at a time to confirm now that I have everything working correctly.

[Gary Lewis]

At up to 13 degrees it should keep responding better and better. But as Jim said, listen for a rattle on tip-in from cruise.