I have my truck running now (replaced old 350tbi with new carbed 350)

I have read all the info I can on adjusting the TV cable and I followed these to the letter. I have all the proper parts for geometry. Nothing is "jury rigged"

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a. Adjustments are made with the engine off. Locate the Adjust Tab on the cable housing. Press in the tab and push the slider as shown in Figure 3.
b. Release the tab and rotate the throttle lever to WOT and the cable will self adjust itself as evidenced by a few audible clicks. Release the throttle lever and check the cable for any signs of binding or sticking.
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After adjustment per the instuctions my trans runs fines, no stacked shifts pulls great........until you try to "stomp it". The trans acts like it just goes "free wheeling". Does not want to pull and the rpms go way up.

can anyone pass anymore info this way so I can find out whats wrong or have I done something wrong?

Thanks
Jimmy