When going at 2nd gear speeds my automatic, 3-speed, 302ci engine downshifts rough and keeps the RPMs up high in 1st like as if I was downshifting a manual with the revs high in the downshifted gear. I am guessing it is out of adjustment cause it shifts fine up and from 3rd to 2nd but from 2nd to 1st is reminds me of a stick shift. Does anyone know what this could be???