Arbess - I have read that thread alreay lol. You had some bad luck too. Funny thing happened today though, some of my wiring came loose and i found it later melted from touching the exhaust lol. Luckily it didnt go through to the copper itself like you had or i would have to fix that too.
Da spike - You gap spark plugs with a feeler guage. Little thin bits of measured metal that you slide into the spark gap and make sure its the right gap size. And yeah when you have this tool its easy to do yourself. I found my problem wasnt actually at 5000rpm but more something to do with boost or being under load. I can have my foot on the throttle a tiny bit and still rev to 6500rmp but i can also be at 2000rpm with foot flat and it missfires, infact its not even missfiring anymore, just hesitates really bad and backfires and goes absolutely no where. Although the car is fine for normal driving. So strange... The missfire could be fuel related (you may to rich/lean) but generally missfire problems in rb's are electrical. Hope that helps...