i used a trailer pin to hold the seat springs onto the perches.
here you can see how where i drilled the hole for the pins and how they sit in the perches
thats the clip i used to hold down the front of my seat but its going in favor of a u bracket which will makemy seat sit at a better angle.
i took this so you could see the setup for where the clip holds the front of the seat down. It allows the seatto pivot but its not really neccessary since the seat doesnt really move that much at the front