Hi folks. I purchased my VR6 in January and have begun the task of repairing all the worn and neglected parts. When I first got the car it was juddering a little when accelerating. I changed oil, plugs, leads etc and it seemed to take it away for about 3000 miles. Its back again though. Is this a common problem with VR6 engines? Also found that i have a leak in the water hose housing on the side of engine block, while changing this would you advise changing hoses to Sparco?