I was cleaning out pee hole dirt with a small drill bit by hand and it broke off inside. I see no other way to get it out but to remove the powerhead and push it out. I tried compressed air but its not getting to the powerhead, something stopped up somewhere, wont even come out of the flush plug by the pee hole. What needs to be undone to remove the powerhead. Also my impeller had a small round pin but the shaft has a wide flat surface cut out, is this normal or has someone put the wrong key in, the slot in the impeller is squared off instead of round. Thanks
