Welcome to the group BBQJanto2015!
So glad to see your mod on the warming rack!
It takes the guess work out of where it's safe to place foods on the top rack. I wanted to try this, but was afraid the stack wouldn't clear the outer frame/support wire. So I just used flexible dryer vent, and curved it over, like most people. Did you cut out just 3 wires, or is it four?
Also how long is the inside stack portion from the top of lid? And how close is it to the grate level? I'm thinking if I can get it to about 2 1/2" above grates, then it won't interfere with slabs of ribs, and will still keep smoke filled chamber without stale smoke.
Huh. Now that I think about it, I guess I could just use some rolled sheet metal stuck in the stack, not attached, put a piece of 2x4 plus a 1x1 on the grill and shut the lid. Then I would have my length measures pretty close.
What are your opinions?
You might try the mod that lets you snap off or on the warming rack in seconds.
Not sure which thread I read it, (probably the LONG one on CG Mods), but basically you just attach nuts to bolts, without the rack in place, then all you have to do is squeeze the rack wire a little bit to snap on the extended bolts ends. Easy Peasy! I take mine off and on as needed.