Ok I have had a kayfun Lite for about 6 months now and I love it. Now my local shop has been rebuilding it for me when needed, They have had it anywhere from .59 - .90 at different times, And during all that it has hit nice with no problems. Now in the last week or so I have been getting a lot of Burnt hits, I have had them rebuild it twice and I have rebuilt it like 5 times anywhere from .6 to 1.5 and im still getting Burnt hits, Now if I Prime it by inhaling hard and taping the airhole I get it to work for about 4 hits then I get burnt hits again. I have used it on different mods and nothing is working. I am using Cotton and have tried using more and less cotton and still nothing. I have checked the screws and they are tight. Now with all that being said the only thing I can find that might be the problem is maybe the insulator, Would you all agree?