Thanks again for the info/ links on your site Tegger! Well - replaced ignition switch is working like a champ, and I resurfaced my old one so I have a spare if ever needed. I bought the little button for the clutch interlock switch, but still can't manage to get my fat hands in to pop it in the hole, so I had to revert to duct tape ball. Gremlins reappeared - intermittently. fuel pump would run - or not - with check light. So I pulled main relay today. I couldn't identify any cold solder or stress cracks, but about half the connections had the "not enough solder" condition as described. Also one of the double contacts had a blackened area that may have had some heat/ arcing problems. I didn't have a desoldering gun, so I just cleaned, fluxed & melted existing solder & added to it to fill in. It may not last as long - I don't now - but it seems to be working right so far.