Flathead & transmission won't sit back far enough?

[matterick]

First off, I'm totally new to these early Ford's and learning as I go. But I am finally fitting the motor and transmission into the frame, but they don't seem to sit back far enough to center on the mounts. Because it's sitting so far forward, it's also pushing the oil pan into the front cross member. With the use of ratchet straps on each side of the motor, I can pull it back into the torque tube to get the bolts in, but this just can't be how it's done. Frame is a 37 and the trans is a 39 case. Do I need a different transmission mount possibly?