Tape / BPM mix up

Hi again, hoping for another simple trick or fix from you knowledgeable bunch.

I have 2 different tracks going at different points in the tape. One is nearly done and I started another jam earlier in the tape and didn’t note the bpm. When I’ve gone back I can’t get the loop positions to match correctly and I get a stutter at the end of a loop and I’m making a mess of things when I try to lift and paste.

I’ve tried to tap the bpm, I’ve been trying trial and error with the bpm to try and get the markers to line up with the end of a piece of audio I know ends on the beat but just can’t get it.

I hope I’m just being stupid, please help!