After putting in the transgo performance kit (700-2-3) it will not shift 1-2 or 3-4 at WOT. I did every thing the instructions said exept adjust the band. The transmision is a from a 90 and has a corvette servo and .471 boost valve. Do I need to go back and adjust the band? The transmision previously had a Superior shift kit. I tried calling Transgo but no one answers their tech line.

 

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When calling their tech line you will need to wait anywhere from 5-45 minuetes for them to answer. It is nice to have a speaker phone that you can listen while you are doing something else. If they put you on hold for that long people's phone bills would be out of sight. Try at 8 am PST, I think you might have the shortest wait. They will answer!, just takes time.