It's been a week since I received and put together my new 6Lb DIY combo and in short, I'm thrilled!  I had a few small challenges with the installation but engineering the solutions was part of the fun.
With this 10 year old Weber grill, the square tubes were about 3/4 inch too low for the base plate-motor mount combo at the highest position so I cut a pair of 1x2 shims to sit between the base plate and the tubes and got some 3-inch bolts for the muffler clamps--just right!  The rotisserie cutouts in this grill were tiny and wanting to avoid using the Charbroil mounting brackets, I used my Dremel to cut those slots in the grill deep enough to accomodate some extra bearing-bushings that I bought at a grill parts supplier.  Now the rotisserie spit is strongly supported on each side of the grill and I think it makes the motor's job easier since the spit and drum aren't hanging on the coupler.  By the way, the motor , motor mount and baseplate is very well made and I especially appreciate the holes being pre-threaded for the electrical boxes.  I chose to mount an unswitched duplex outlet on the back position to give me a place to conveniently plug in a fan to blow on the motor when I start doing big long roast sessions.  To make the grill more efficient on gas, I blocked off about 70% of the rear vent with a piece of carpet threshold that fit perfectly and already had a slight bend which makes it press against the grill base nicely when the hood is closed.

Enough tech-stuff--forgive me, I'm an engineer--the drum is a work of art and the motor and mounts are terrific and the whole kit is well thought-out and it makes GREAT COFFEE!  I've done several roasts using your
suggested profile for 1lb batches and I'm getting the hang of it!  I will graduate to larger batches when I decide what kind of beans I want to order in quantity.  The only bad thing about this setup is that I want to roast all the time and you need lots of beans in your inventory to have all that fun!  The picture attached is Guatemala--Villa Herminia at a very even roast...delicious.

Thanks for your great products, and even more for your superb customer service!  Keep up the good work!

Your drum is awesome! I just roasted my first batch of beans on my new
 RK drum and they came out great. I feel like a kid at Christmas! Oh
 yeah, it is Christmas and this is my present to myself! I roasted 1 1/4
 pound on my first try and chose a bean that I do not really care for so
 that it did not matter what happened. My grill did a great job of
 getting to temp fast and I was able to maintain temps even in the 45
 degree weather with a little breeze blowing. I hit first crack at 9:11,
 cranked back the heat some and

I just wanted to let you know that everything worked out great for the shipping.
We christened the roaster this evening, and all went well. I am looking forward to my first cup tomorrow!
Many thanks for all your coordination.
Mike