I have the 1980 stepped seat with the dual hook spring loaded latch.
The latch would slide sideways, and this resulted in a lost spring. (For the 26th time, thanks XSChris for replacement)
Apparently, the problem is that the hole in the side plate got hogged out and the little crimps in the latch bar would not keep it in place any more.
I fixed this with a 5/16 spacer from Ace Hardware. I had to cut it down to size, which more or less meant cutting it in half. Dremel works, watch for burns.
Latch is now solid and properly operational.
The latch would slide sideways, and this resulted in a lost spring. (For the 26th time, thanks XSChris for replacement)
Apparently, the problem is that the hole in the side plate got hogged out and the little crimps in the latch bar would not keep it in place any more.
I fixed this with a 5/16 spacer from Ace Hardware. I had to cut it down to size, which more or less meant cutting it in half. Dremel works, watch for burns.
Latch is now solid and properly operational.