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Well, the tranny went back to shifting at irregularly again.  Transmission  Earl dropped the pan once more and also dropped the valve body and cleaned the valves and drilled some of those holes out to make a "make shift"  shift kit.  * that dudes good!!!  I wish that tranny worked like that from day one.  I've learned some much about trannys the last couple of weeks, I'm lovin it.

I talked to Earl, the guy who sold me the used governor.  He said he didn't understand why the transmission would shift correctly at first and then start having shift problems so soon after the service unless there was dirt/trash stuck in the valve body.  He said, "hold the accelerator to the floor and keep it there, it will shift just before redline."  After doing this a few times the transmission began to shift better and better.  After two days of driving it runs like new.  Turns out the old fluid was very dirty and the valves were sticky.  The new fluid needed time to circulate and lubricate the valves as well as the filter removing dirt/debris etc.  Forcing the transmission to shift at such high RPMs caused very high pressures in the valve body helping to "clear" dirt and debris.  Thanks for all the help.  This is a really good forum.  Looking forward to more good discussion.  I was able to fix the transmission for about 50 bucks.

Hey wingnutz,
I never looked at the TV cable so I can't really say much about your "slack" issue your having.  All I know is the tranny wouldn't shift up and the guy said it was straight up governor issues.  I replaced it and it worked great for a short while.  It then started shifting at higher RPMs.  Sorry I can't be of any help.

The transmission has 168K miles and has never been rebuilt or removed etc.  I serviced the transmission and did see some metal around the magnet but nothing unusual.  It wouldn't hurt to check the TV cable measurements but I just can't see how a transmission would work completely fine one day, not shift into second the next, have a governor replaced another day and go back to shifting just fine again, and then a few miles later start shifting at higher shift points.  With each mile it seemed to get worse.  It would be a coincidence if the TV cable did get out of adjustment right after replacing the governor.  A tranny mechanic I kinda know said to expect sticky valves and such because the transmission was well overdue for a service.  I'm gonna figure this out, it's only a matter of time.

After changing the transmission governor, the problem of shifting seemed to just go away, at least for a few miles.  After about 4 to 6 miles of stop  and go traffic, the high RPM shifting delay problem occurred.  Cable stretch in this circumstance isn't the issue, that's more of a long term circumstance.  Thanks for all the input, it's very helpful.

Thanks for the reply.  Replacing the governor resolved, for a short time anyway, the shifting from first into second and third.  How would the adjustment of the TV cable resolve the issue the truck is having now?  The cable didn't need adjusting when the governor was first changed.  You thoughts are much appreciated.  Thanks.

My son's truck one day stopped shifting from first into second, third and overdrive.  A very knowledgable Chevy person said it was straight up governor problems, broken gear or stuck valve / piston.  The governor gear was not stripped or broken but the piston was stuck.  I replaced the malfunctioning governor with a used functional one and the transmission began to shift correctly, at least at first.  The truck now is reluctant to shift into second and third but will do so at much higher RPMs than usual.  Not sure about overdrive, I'll need highway speeds to test that.  I serviced the transmission, new filter screen and fluid, but it's still behaving the same.  Any thoughts or ideas?  Trannys are expensive so any help is much appreciated.  Thanks