85 UrQ No spark!

[-=Bob=- <mx@snet.net>]

About two weeks ago, I put the new head on the UrQ and it started right
up. Drove it around and it ran great.  When I got back from the ride, I
noticed the radiator had a leak, so I got it recored.  Today I put the
radiator back in and the SOB wont start.  Started narrowing down the
problem and determined it was lack of spark. With key on I get 12v at
the coil though.  Suggestions?

I remember seeing this over the last few months, but Ill be danged if I
can find it in the archives. It would be nice to have a search option.

Any tips appreciated.
Bob