Thanks for the input so far. My GT16 is a Murray-Ohio made unit w/a Briggs 16hp V-Twin, the mower deck engages and disengages via levers on the deck. I have found some parts locally, but getting info from local lawn & garden dealers is like pulling teeth... lol. I would like to find a supplier that can provide aftermarket or OEM parts for this unit and I am willing to purchase items by any way possible to avoid dealing with the cranky supplier out here.

Hi,
These people have parts, and the parts breakdown online:
Lawn Mower Parts and Lawn Tractor Parts Snapper Cub Cadet MTD and More (http://www.outdoordistributors.com/)
Peace,
Clarke
PS I have more if needed