no upshift at wot

Well I just got my trans and converter put in and now it wont upshift at wot. I have a tcs 9/11 converter that is a 3200 stall. The trans I bought from jms custom tubes on here. It is supossto have the inturnals cryoed. When I first put it in it seemed to hang in gear a little longer at part throttle than the old one did. Part throttle shift points are 14-16mph from 1st to 2nd. 28-31mph 2nd to 3rd and 48-50mph 3rd to 4th. I have set and reset the tv cable and I know it is set right. I pulled the gov that was in the old trans out and put it in the new trans to get these shift points before that it hung in all gears about 3-5mph longer. What might it be?
 
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