Tranny operates find except it won't downshift from 2-1 during full throttle. If starting fromd a dead stop, it will wind through 1st as it should, but traveling about 10 mph in 2nd and then stomping it - it just stays in 2nd. Played with TV cable which does it's normal thing holding longer before shifts, firmer shifts etc - still no donwshift. Changed out TCC solenoid yesterday, but still no go. Any ideas before I haul this into the transmission shop (got to go 120 miles to Dallas for a good transmission guy)