Thank you guys.....I respect your opinions on here greatly!! Heck, I used a picture from a Bandit post to build my second shelf, and follow Tusca's builds!
My thought was to sleeve a 6-8 inch extension, and have it slide up into the current stack. A couple of tack welds would hold it in place, and it would be close to air tight, not that it would need to be 100% tight. It may be worth a try as I'm always looking for something to jack around with!!
Thanks again for your input guys!
Full Draw BBQ
Lang 60D trailer
22.5 Weber Kettle - retired
Rec Tec Grill