I did a search on line and this is what I came up with from Not Leftovers Again!
The most amazing thing, I thought, was the use of tin foil balls in the bottom of the slow cooker. Genius! I've only cooked chicken quarters once before and it was a mess, I had no idea they were going to generate so much grease and I didn't know how to deal with it. This solved that problem completely!
I used Grill Mates Sweet & Smoky Rub and of course Sweet Baby Ray's Hickory & Brown Sugar BBQ sauce. I also had never used my broiler. Not just in this, my vintage circa 1985 oven, but in any oven I've ever owned (ok that's probably because I didn't learn to cook until just recently but none the less...) I followed the recipe exactly and it came out perfect and absolutely delicious.