Englander Madison secondary tube missing screw?

[strategy400]

So I cleaned my chimney and got a pretty good haul



And after I cleaned the top part of the stove where the stove pipe connects but a lot of creasote fell down onto the baffles. So I was going about trying to figure out how to shoehorn the baffles out and I realized the front secondary tube can be removed, but as I'm removing I realize it's not secured by a screw. I'm not sure if it ever had one. There's an indentation so I don't know if it snapped off or they didn't drill it at the factory. Am I going to burn the house down if there's no screw?

 

[begreen]

There should have been a screw with a 5/16" head securing the tube. That keeps it in place and at the proper angle. Do the other tubes have the screw still holding those tubes in place?