I have had two 1987 TWs that didn't like wide open throttle. What fixed it for me was replacing the stock jet, #114, with a brand new jet #114. It worked for both bikes.
As for the start issue, close the throttle when you try to start it. On both of mine it is very difficult to start with the throttle open.
And ditto, I can barely see the spark on both my '87's.