Location of temp probes with guru or stoker on smoker

I'm sure some other folks on the forum use a guru or stoker with a BWS Party or similar smoker...at least I hope so. I'm wrestling with finding the right place to attach the temp probe for the pit temp. I've heard some people hang it from the tel-tru thermometer on the door, but I thought I could get a more accurate temperature by hanging it off a rack in the middle. I've done a couple cooks with my new stoker and tried hanging the probe off the top rack and find the temp to be 20-40 degrees hotter than what the tel-tru reads.

Where do you attach a temp probe to accurately measure the cooking temperature of your smoker?

It was another high heat cook when I wasn't planning on it. I found a gap in the firebox door that let the fire run out of control in the beginning and I couldn't recover. I ended up cooking everything at 275. The basket held a bunch of charcoal and I didn't have to refill it so that was nice. The basket of charcoal lasted about 11 hours even at the high temps. I'm eating here in a half hour so we'll see how it tastes.

Thanks again for making the baskets.