Driveshaft length.

Hi everyone. 1970 cuda. I need help before I make another move. I just had a driveshaft built. The previous one was way too short. With the new one I just got I have 1 1/4” before the slip yoke bottoms out in the transmission, I know 3/4 to 1” is ideal but what is the limit. Is it worth taking back or is this fine
Author: ppimpinello