My wife gave this to me for my birthday and I absolutely love it!  The build quality is good and the spit is strong enough to use for turkeys I have done a 12 lb and 14 lb with no issues. They were some of the best I have ever had - the mas tender and juicy and perfectly cooked.  My test runs were on chickens and they are great - next the lamb leg!

The wedge shape seals fairly well for lid closure and the aluminum ring is sturdy.  I will say it does not perfectly fit the Big Joe's Interior/Exterior dimensions. Do not expect it to line up perfectly ( not sure why it is this way but it does not seem to impeded performance). I did deduct a star from the design category for this.  Everything else is 5-Star.

Clicking the switch reverses the rotation direction which is useful - I have theories on why for which cooks - it is nice to have the choice.  

This accessory has added even more enjoyment and usefulness to an already incredible tool.