Originally Posted by
kolt54321
This is the seat - I reckon getting the bolt off would allow the seat to go back, never had tried. Is that common or are saddles generally static in horizontal placement?
Your saddle is already set back about as far as it can safely go. You shouldn’t push it back beyond the black markings on the rail. I can see the rail is already slightly bent and moving it even further back will make it more prone to bending at the back end. You shouldn’t clamp the seat very close to the end of the straight section of the rail. Maybe time for a new vintage saddle? You might find one with more fore-aft adjustment.