Have you ever thought of doing a parts for sale / wanted forum. I know you have the trading dock but it doesn't work well if you have a bunch of parts to sell. Since this is a club site you could make it so only members could post for sale items but anyone could buy them. I hope you will give this some serious thought as it might help grow the club and bring in people.
I'm attaching a link to the parts for sale/wanted from another site I belong to. I will give you an idea as to what I'm talking about. http://www.alfabb.com/bb/forums/alfa-ro ... le-wanted/