Unlocked for a few rides around won't hurt the TC or lockup valve. But, don't forget to set the throttle valve cable. With the TV cable hooked to the carb and the engine off, push in the D-shaped button where it slips into the mounting bracket, twist the carb linkage to the stop and release the D button. This sets wide open throttle so the trans knows where to shift. Skip this step and keep driving and you'll have problems inside the trans.
Other please chime in with refinements or corrections.
Other please chime in with refinements or corrections.