haha k. i had a piece before this tho and didnt have this problem at all although the stem was not permanently attatched as with this one. but thanks i guess haha. And its not that im hitting it really hard cause im not, its just like the pressure or something when i put my mouth to the bong and get that sort of suction that causes the water in the catcher to raise up the catchers stem and into the bowl, or at least thats wut it seems. if anyone else knows what im talking about please let me know. By the way my piece is WRKD glass on glass. thx.