K K Kuhndog Mar 12, 2025 I have a B21 that gets weak after about 5 minutes of running, have replaced almost every Oring on the machine, and rebuilt all my cylinders,(they were due) also new S tube and Oring...
I have a B21 that gets weak after about 5 minutes of running, have replaced almost every Oring on the machine, and rebuilt all my cylinders,(they were due) also new S tube and Oring...
