low c

Hi guys, each time i play, i tune my sax in concert A first, then the whole horn is in tune, except the low C, B, Bb, they are 30 cents sharper, what' s wrong with my horn, and what can i do to fix it? I am using a big chamber mp. and it's a soprano. thank you in advance.

Hey i'm looking for a bass clarinet to double on in the $400-600 range. I'm thinking a student model buffet or selmer from the 60s-70s, preferably low c, and in playable condition with no repairs needed. I live in Ontario, Canada and am fine with paying for shipping as long as its not coming...