My MBXL has been running great since the mods, still needs some small tweaking. I tossed the original chip pan and water pan. For the water pan I bought a full sized hotel pan - http://www.amazon.com/Next-Day-Gourmet-Stainless-Steel/dp/B0001N46UQ/ref=sr_1_7?ie=UTF8&qid=1373584266&sr=8-7&keywords=full+hotel+pan
It fits great and holds a lot of water, I also use it a lot in an out of the smoker when I don't need a water pan.
For the chip pan I use a 12" iron skillet that I rest on top of a grill wok. The chips still burn kind of fast so I think I need a little more height, I'm just going to put a couple nuts and bolts in the middle of the grill wok to raise it up a little more. I replaced the bolts for the burner in the bottom of the smoker, I think they originally screwed in through the bottom into the threaded nubs. Poor design, they rusted solid.
I put in the master forge chimney and it works great! better air flow and I think it helps regulate the temp better. Sealed the door with some red RTV, the door seals nice and tight and doesn't leak nearly as bad.
I did re paint the whole smoker. I gave it a good work over with the wire brush wheel and used high temp grill paint. The paints holding up a lot better inside and outside of the smoker than the original paint, however it's already cracked off the bottom again but everywhere else looks great. I also got a cover and it's helped a lot keeping the moisture out.
I plan on attaching a charcoal firebox this year like someone else did on this post. I like the idea of being able to use both charcoal or propane and need more practice with the charcoal. Also thought it would be good to put my amnps inside for cold smokes. I plan on putting in some sort of damper so I can close off the firebox when not in use. Then if I can just build a sweet cart I'll be set!