1988 ford ranger 2.9l v6 runs great except a little ticking under the hood. main concern though is that it wont shift into drive when i hit the freeway. about 35 top speed. ideas?

I have a 91 ranger. There are two band adjustments on the transmission that is supposed to be adjusted every 60K miles. There are two adjustments, one for overdrive and the other for everything else. The overdrive adjustment is closest to the front of the transmission and the other is back behind it closer to the shift lever on the driver side. The locking nut is a 19" and there is a tool you get for the other nut. I have found a 3/8th (I believe) 12 point socket will fit on the square. You loosen the lock nut, then you tighten the band adjustment bolt to 10 foot pounds. Then you back the bolt off 2 full turns, then hold it in place while re-tightening your lock nut. I had to adjust my bolt in 1/4 turns at a time after test driving to get the transmission to shift just right.