Im no repairman but i bought one of these cameras at a
discount because of the sticky slow speeds. Its easy to
fix, all you have to do is loosen the rear chamber cap a bit, unscrew and pull out the piston
clean it with 99% alchohol, do the same on the inside of
the chamber with a thinned out qtip, and make sure to dry
both thoroughly. Do not lubricate! On reassembly set the shutter to fully extended, which is the 1 sec setting, insert the piston into the chamber and reattach the piston screw on the other side. Once everthing is back together, and the shutter is set to 1 sec, tighten the cap on the chamber. This will set the air pressure to the correct setting for all speeds. The only real danger is bending or scratching the piston/chamber. Be careful and its an easy 30 min fix.
