I am considering ordering the probe grommets for my new WSM from BBQ guru and would like to get an opinion from someone was who has them already. Are they a good product? Are they easy to install? Any danger of cracking the finish on the cooker? Smoke leak? I've only had my WSM for about two weeks and I'm just a little nervous about making any modifications. Thanks.

Welcome to the forum Russell! Glad to have you with us!!
The guru grommets are a breeze to install, no problems whatsoever.
As far as the smoke leak, it's minimum and the WSM is not meant to be airtight anyway. If you need to worry about ANYTHING while you're using your new WSM, it should be about your supply of libations... Mod away McNeely!
Enjoy your stay

Thanks for the quick reply Jim. Maybe I'll order those grommetts. It would surely beat running my probe wire through the top vent.

The grommets are a no brainer.

Install them and never look back!

Russell, there are other approaches to this grommet thing...
read this...
and (in my opinion, the BEST eyelet/grommet mod) read this....
and most recently posted is this.

Russell, I think you would find them very easy to install (about a 5 min job)and well worth it.
The probes on my ET-73 slip right through them, no problem.

Thanks for the input guys. I already feel better about making mods. Good links Jim. Good to know about these options. Knowing about all the great support on this site was one of the reasons I chose the WSM.