Funny I just got that exact Tobeco Kayfun from Eciggity.com in the mail today! It comes with lots of extra o-rings, screws (both deck and air flow hex screws), mini screwdriver and allen key. The thing it doesn't come with is the "clear" middle tank piece. It only has the steel tank sections. I also bought the "m" opaque tank from eciggity and it looks really cool as a "clear" kayfun!
There was one big flaw with my tobeco clone that I had to fix before using! This is going to be hard to explain but on the deck, directly below the air hole there is a thin piece of white delrin separating the negative block from the deck. The delrin was "trimmed" to much and I could see a tiny gap under it. When I blew down through the air hole I could feel air come out of that hole. Not good as I believe I would get leaking through it.
I took the pin out of the bottom, the pieces on top of the deck came off. I stretched a tiny o-ring around the bottom of the delrin and that sealed the hole. I've been vaping on it for the last few hours and it's working good with a 1.6 ohm microcoil/cotton set up on my Sigelei Zmax V3.
I regret not taking photos of the problem and the fix
I should add that other than the problem above the clone is ok. The threads seem good, not buttery smooth but ok. There was a lot of machine oil and it did take a little scrubbing to clean. Also the juice channels seem on the small side. Vaping at 8.5 watts, I could just sense a little bit of burnt taste so I've backed it down to 7.5 and it seems happy. On the whole this is not as good a clone as my EHpro Kayfun lite but it's not bad either.