This car was in storage for almost a year, after starting it up and test driving, the transmission shifted sluggishly.
Checked trans fluid level and was 1 1/2 quarts low. Filled with fluid and resumed test drive. Slow shift response stopped, drove approx. 15 miles then parked it.
Week later, started and tried to drive with same result. Shifting did not occur until engine rev'd up to 4000 rpm.
Serviced trans (new fluid and filter). No change in problem.
Need advice if adjustment or additional maintainence is needed.
Thanks to those that respond.