dmax bad shift

this is my truck i just put a new built tranny in. done by myself and probably wrong. the problem shift is at the 6/7 second mark. also at the very last shift i let off so you cant hear it as strong but its there. UPDATE: when i pulled the trans the gapping between the c2s and c3 was wrong and wasnt dissengaging! theres a plastic spacer thing in there was totally shot. holding up nicely now. Dyno'de truck 10-1-11 518.8HP on eddy Dyno.

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