my original probes were acting up sporadically, I didn't see any new ones on RT's website so I opted for a few of these from Amazon
Recteq Grills Upgraded Probe ~$16/ea.
So far so good, 1 cook with pork butt and shoulder and I calibrated the probes - they were spot-on with the ice-water test.
I...
I have a Bull on the side, and a gas burner built into the outdoor kitchen - gives me some flexibility at times to open the one side up by moving the bull :)