I have no problems with mine... I never have to change the mesh except for when I feel like it. I don't get that gunky clumpy stuff unless I'm burning some really dark juicea like coffee flavors or chocolates.
I use #325 mesh (14mm rolled to 2mm) and 32ga kanthal at 3 wraps around the mesh. I make my connections with a wire wrapping tool on raw leads, no ferrules or crimp tubes.
No glows after the kanthal is oxidized (usually around 10-15 pulls). I'll burn through 2 or 3 full tanks before I even have to think about cleaning the mesh or coil.
When it comes time, I loosen the wrapping on the leads, but leave them mostly intact and remove the mesh and coil as one unit. Then I burn all the gunk off with a propane torch for 10 seconds or so until everything is very clean and put it all back together again. I have yet to pop a coil or have the mesh in an unusable state, but I change it once every other week anyway because I have TONS of kanthal and mesh so I figure...why not

Cleaning and replacing the wire and mesh take me about 10 minutes....15 if I'm doing other things as well, lol. Starting from scratch with a brand new meshroll takes me about 20 minutes because I have to oxidize and dry the mesh.
Those are my experiences so far anyway... hope this helps some of you guys with genesis setups.
The CAD is starting to look like what I want for my new MOD. I'll post it after I have Raidy's approval.