yes i disconnected the wire to set timing, and anyone that says you can only go 4 degrees is wrong. I have ran anywhere from 0 to 16 and the truck ran fine at all. I keep it just over 10 and it is snappy this way.
i replaced the TBI base gasket today. All of the calibrating on the link is good information, but highly unnecessary. A quick disconnection of the battery cable and a couple start ups for it to learn itself and it will run fine. My problem is about 60% of the time. I can put the idle screw anywhere and the IAC will make it idle fine. when it dies it will fire right back up and run fine for awhile.