Ok, got back to the A-Star. Have not installed any new parts as yet. Re-checked for any codes. Ran KOEO and KOER tests. Both resulted in "111" (good). Took it on a short interstate spin. Low and behold it shifted into overdrive and ran that way for about a minute. Then it started shifting back and forth from 3rd to OD, then back to 3rd. I slowed down to 60 mph and shifted into 3rd and drove the rest of the way. Is this a solenoid symptom?