SBF C-6 will shift into 3rd gear at WOT

SBF C-6 will shift into 3r gear at WOT, will go into 3rd if you let off the gas. This C-6 does have a TCI reverse manual V/B, 3100 stall T/C, also note this transmission only has 125 miles since the last rebuilt?

Checked linkage in all gears
Adjusted the band
Changed fluid

put a non tci valve body in and try it before you do anything else. I have a tall stack of burned clutchs because of a tci valve body.

WOW , RMVB should make no difference when 3rd shifts . Keep hearing more + more of this TCI stuff . I've been helping a local guy that got a TCI C6 here that issues as well