thanks for your reply. I agree with the lobe grinding thing, makes no sense, besides, if one lobe is all that's required to ignite both plugs then why isn't it doing so now?

I haven't looked into the PGM as yet but that was my next move. I can have it tested in the city, $100 just to hook it up without any repairs if needed so I'll check it out myself first, the smell test is usually a good indication once the lid is off.

I'll let you know the outcome.