Matt and Perfect Rack: Currently I'm about 600 miles from my smoker three states over on Spring Break with the fam. So, I don't know about the guru or the rack spacing. I'll be home tomorrow and check on both those.
Perfect Rack, I was hoping the BBQ guru install was a simple screw together affair - but I did not play with it during my initial seasoning run. I did get it out of the box and look at it, but didn't do that while I was near my Assassin to "see" how it fits on the open ended valve.
Did you figure it out by chance?