Ok first thanks for the info on the blend door and gasket sets.
Second... This one has me thrown for a whirl. The main duct here has screws and latches like it should come apart but then has rivets towards the driver side
![](https://forum.garysgaragemahal.com/file/n156463/1000004201.jpg)
The driver side has a bolt securing it to the firewall, but above the heater core is this rivet.
![](https://forum.garysgaragemahal.com/file/n156463/20240707_125801.jpg)
This is where I'm at and about ready to drill out some rivets 😂 which can't be right. So what am I missing?
1985 F-350 XL | 460 | C6 | "Rufus Maximus"
1986 F-150|Standard Cab|4x2|300Six|C6Transmission w/3.08 rear|Name:TBD
2021 Ranger XLT Super Crew | Cactus Grey | black out package | max tow