On Mar 22, 2009, at 2:54 PM, Barry wrote: ... a tiny bit of > magnetic trash that had gotten in the space between the barrel and > magnet. > ... I used a small strip of > paper and passed it in the air-gap several times Try masking tape. It "gloms" onto the dirt better. Roy Roy Morgan k1lky at earthlink.net 529 Cobb St. Groton NY, 13073