I would get in touch with the builder that I PM’d you to see what he says, and really dig deep into looking for a “correction” type tune for the transmission, if any are out there…
I’d just let them do their work and be happy for the new transmission. At 56,000 miles we had the transmission replaced in our 2003 Olds Silhouette. It was warranty work and a new trans was used. The transmission was still going strong at 187,000 miles when we donated it. The way I looked at, the van had 187,000 miles on it and the transmission only had 131,000 miles on it.
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