Does anybody know how to open the top on a Singer 6215C??? Does anybody know where to find an adjusters/service manual? I located a user's manual. No info in there - I think they were trying to keep the service guys in line. I'm thinking the machine might be ok but shouldn't the top moving thingies get oils now and again? My shop is getting cluttered up with plastic machines. People gift me with them. I figure give them a sporting chance.