I knew I came to the right place, I appreciate your quick response and detailed knowledge, your measurements were precisely what I needed, thank you, the forks are working great now.
It may be hard to see in the picture, but my seat is sitting on a plate of metal that is curved, so there is a few cm of space between the plate and the exhaust. and the plate is wrapped in a few layers of heat resistant tape along with tin foil. After ~30 minutes of riding the plate gets warm but not even close to heating the seat.