is there a way to clean all the vape res thats built up in the class piece and tubing or do i basically have to buy a new one? afraid to pull the glass out of the tubing cause i dont know if you can get it back in afterwards or if its glued or what. any help would be apreciated. by the way i have the vapor bros non-hands free model with the upadated heating element. where you gotta hold the bowl to the heating element to hit it each time.