i've had my k11 for the last 6 months and since ive had it the heater has been useless, so a couple of weeks ago i decided to finally investigate it, after taken nearly the whole dash out and causing many cuts to my had i found they had the brilliant idea to put a pollen filter in behind the glovebox. on removing it i found it was blocked up, this seems to be a common this becuase i had to do another one a week later. has anyone else had this problem?