No offence but alot of those counter guys don't know anything. They my know the cataloge front to back but they ain't been welding. I bet Sumner doesn't make a "cheap" jack. This makes me mad for some reason! Give them a call they may be real interested to know about your experiance.
http://www.sumner.com/mm5/merchant.mvc?Sumner Manufacturing Co., Inc.
7514 Alabonson Road, Houston, TX 77088
Phone (281) 999-6900 * Fax (281) 999-6966
(c) 2008 Sumner Manufacturing Co., Inc.