I just got my new fuel pump today and went out to start the job, but I'm stuck because I can't get to the part of the floor with the access opening. The wagon rear floor cover folds forward in 2 sections, but the third, front, section is fastened to the metal floor. I could see 3 tabs at the front and removed the nuts, but it looks like now I have to lift the front of the front section up to unhook it from some hidden clips, I presume, but the rear seat backs are in the way.

Here is the problem: I can't get the wider section of the seat back to fold down. It's always been tricky and required some wiggling and holding your mouth just so. The last time my son borrowed the car he tried to fold the back down and broke the plastic handle on the back of the seat. I can still slide the handle up and down, but I don't know what it's doing. The latch at the top near the handle is in the locked position, but the seat back is not locked in place. It's the latch down at the bottom on the opposite corner of the seat back that won't release. So, do any of you have a solution, other than cutting the seat back apart to see what's going on?
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1992 745 approaching 500k km