Hi Frank, If you're familiar with the XK60, the exhaust is finished off with chrome tailpipe finishers protruding out of apertures on the special rear valance. These are virtually rock steady, almost no play whatsoever. I've done a test for engine mounts (foot on brake,in gear and slightly revving engine in forward and reverse). The engine doesn't rock at all, so I'm now fairly confident that the mounts are okay. I've ordered the propshaft tunnel heat shield now and am wondering whether that and a stainless exhaust system will finally cure the problem (though quite expensive). GS just want to keep charging me for any work done, even though they assured me the rear heat shield was going to solve it. I'm beginning to wonder if I'm just being pedantic, but the vibration is annoying. Has anyone else with an XK ever posted a similar problem? Peter, The coffee and bacon sandwich sounds yummy!!!