Kaptain
Member
My theory is that the gap between the two boards in the NC-30 is intentional. With that bit of a gap, when you bump the top of the stove during loading, the boards have room to move, reducing the likelihood of breakage. When you jam a steel rod in there and lock them firmly in place, they become a lot more fragile, as they have nowhere to go when they're bumped. I thought this through extensively before deciding against adding a piece of threaded rod.
I'm happy with the factory performance and emissions ratings, but by all means, jam that threaded rod in there, you'll help Englander sell more replacement baffles.
That's why I used a 1/8th stainless steel rod inside a piece of stove gasket. It allows a bit a give while fully sealing the gap.