whats your shift points set at....? bad solenoids will usually just skip the gear and go from 1st to 3rd or 2nd to OD, check the fluid see if its low, also is it a stock trans, if it is you may need to change the accumulator pistons or servo, might not be holding up the pressure, idk, its a few things to check out, and almost full throttle and WOT isnt much difference when it comes to the tuning cus 70% open and WOT isnt much difference, thats probably why its doing it at both points.