that sucks. i smoke every day for like a year now and i my tolerance never changed. and i always smoked it out of blunts too. some days i might smoke a half of an ounce and other days i only smoke a blunt. but every time i still get real high. mabey the weed you are smoking now is less of a quality then the shit you had befor, cause not every single kind of weed you smoke is going to produce the same high, the shit is different. because i am pretty sure there is no such thing as tolerance. you just gain experience and you know whats going to happen to you. the only evidence i can see of tolerance is when you stop smoking for a while then smoke. but after that its the same. it could be all in your head or something