Hey @Racer_Rick12! Do you have a specific situation\chassis you want to talk about?
Whatever I have to hand if I’m honest. I do like anodized alum conical washers though. Exception being for mounting of lead weight, for that you want a good spread of area so it doesn’t pull through the seat.
Tough one. I’ve seen it done a bunch of different ways including bending the A portion with an axle then using a crescent wrench to square off the tabs.
Leave as is, maybe work to get your head out of the wind a bit, but otherwise just leave it the same.
The best thing is to find a solid reference from someone who’s a similar build and weight and running similar tires to you. Next best thing is to go with the chassis manufacturers’ starting point.
Here’s a couple of topic worth delving into on Seats:
For manufacturer specs on seat position, you might find something here: