Seat tracks, seat belts, seat install

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Thanks for your help on my shifter now I am back for more help.

I am working on a 69 Chevelle SS with buckets and lap belts. The car came with the seat tracks off and no labels on tracks or seats. Also new seat belts. I spent 4 hours putting seats and tracks in every combination possible. I finally got the seats installed so they look right and they are straight. Now the problem. If I try to install the seat belt retractors there is not enough room. The retractor is forced up against the seat side plastic trim so tight it took the paint off. Super frustrating because there is no good photos in the shop manual, assembly manual or Fisher body manual.

I have the retractors on the metal wedge shaped things that angle them forward and I am using the factory bolts holes. This car has never had the floors replaced.

If anyone can give me some guidance or pictures that would be great!