I could sure use your help locating a dash vibratioVibration in dash, can be duplicated in following manner, left foot on brake, right foot on gas, put into drive and bring to approximately 600 to 650 rpm rpm. a vibration will set up in the dash....can't find it. This duplicates a situation that is equivaqlent to driving on a flat road in 4th gear at 1050 rpm (approx 42 mph) where I will typically pick up this vibration. It starts and stops quickly and is not a sustained noise but it is still very annoying. I can't have the only car in the USA doing this. Any suggestions from anybody anyhwere would be greatly appreciated. Thanks, Mike, Daytona Beach, Fl.