I purchased a used Hobart model 1612 code m ser#56-0620627. The depth gauge was stuck and while removing the two large pins two small pins on the main adjusting rod fell off. I could use a owners/repair manual. Can I go on line and print one out and if so what is the web site? FYI, the phone numbers published on the web site seem to be incorrect. The number I got from the site was 1-800-462-2278 which is a federal credit union plus all numbers aren't printed.