We purchased our Select Comfort king bed about 12 years ago. Overall we have been happy with it. We purchased it before it became "Sleep Number" though it's the same concept. HOWEVER... We have replaced one chamber AND the pump, and now the other (?) chamber needs replacing (it is deflating now). We went through the drills they have you do - cap it off and see if it deflates, check the black O ring, switch the hoses, etc. OK - we have determined (we already knew this) that YES - it needs replacing. Now we find out that... read full review »