My 150 is up on blocks (has been for awhile now) and I start it up about once a week. Yesterday I decided to put it in gear (TH400) and nothing happened. Tried again later in the day and everything was fine....driveshaft/wheel turned ok in reverse & all forward gears. I know very little about A/T & torque converters. Was this a torque converter bleed down? Something to be concerned about? The car won't be back on the road for another 8-10 mos. Thanks for any insight.....never too old to learn.