I have a set of freshly rebuilt Thermal Flows for sale. $80 to your door. I just rebuilt them 2 weeks ago with new seals and paint on the bodies. The springs do have some pitting but they actually cleaned up pretty good. They have all the correct plastic sleeves and nylon spacers from the factory which are hard to come by. The seals are not common and hard to come by. They are for a DT400 and are the B54 series. Fresh Bel- Ray oil. I have about $80 into them and don't need em. Send me a PM if you want them. Cleaning out my shop of stuff I don't need.
The Yamaha Enduro site is hit or miss. It pisses me off and I am a member. Their website format sucks IMO.
Here's the shocks. Old seals are above the shocks.