Like Google Uses DMOZ for descriptions and information perhaps Yahoo has found the use of the "|" Character in your title talk offensive and reverted to a previous title. At one point or presently you have placed a pay per click ad/listing on Overture and the Wickman Coventry title is the one used in that Ad on Overture. You also are no where to be found in the Yahoo Directory which still can be done for free at:
Yahoo! Submit Your Site
If you submit your site to the yahoo directory, (with a better title tag...please) you will find this problem will be solved and you'll get better ratings.