Transmission install..

First time installing a transmission.. I'm installing a 4spd in my small block 72 Demon.. I've got it close, just can't get it to "seat" and I don't want to force it...but damn, I feel like I'm so close.. All bolt holes are lined up and started. Any tips..??20241205_185635.jpg20241205_185640.jpg20241205_185656.jpg20241205_190209.jpg