I just acquired a Pedersoli 45-70 falling block. When I drop the lever to load the block falls below the loading ramp and I have to move the lever slightly to the rear which raises the block and aligns the loading ramp. Same in reverse when I eject a shell. Shouldn’t there be a stop point that has the ramp level?

On mine the ramp and block and forcing cone are almost dead even. I didn't take the block out but it looks as if the downward motion is arrested by the slot in the loading lever link. ie when the lever is full down the slot in the link is full down and the block lines up. There's no extra "stop" as such. Of course you didn't say exactly how much the block is below the ramp. Mine is just a hair low - say 1/16" or less. Does it really interfere with loading? I'd sure have a smith look at it if it's a problem.