I am a new member and wanted to say Hi. I just got a Tobeco kayfun v4 and its leaking alot form the airholes, I have the diagram with the numbers to the parts and have been looking to replace the o-rings as mentioned in other posts. everywhere i go to buy o-rings have an outer diameter and inner diameter and thickness, does anyone know exactly what size i should get for #16 & #18 o-rings. the diagram says 11x1.5 and 10x1.5 but is that the inner or outer diameter. my tanks o-rings are way wider than that and a few i bought are either too thin or too thick and cant close it down completely. i would appreciate any help 
But I'm sure someone here is a bit more knowledgeable on the subject. That being said are you sure it's the o-rings that need to be replaced and not your wick, I know that on a lot of RTA's if you don't wick it just right, your juice can flow in to the air holes on the deck, it's an issue i've found with most of my rebuildables at least. What are you using to wick and how tight is it in your coil?
