Has anyone had their bean can rebuilt by Oak? Apparently he services them, there was a decent write up in the last issue of Airmail about it. According to AirMail: With Oak Okleshen as our technical editor, it is also the definitive source on airhead technical matters. Oak is both an engineer and a former BMW service shop manager who has been consulted by BMW on several sticky technical issues (which he unravelled.) There is no better source for uncompromised technical advice. I'm looking for a cheaper option than a new one or the Alpha unit.