Triumphrat

i have an 04 sprint st, completed valve clearance inspection. had corrosion in # 1 cylinder ignition coil/plg well. purchaced updated part for 1050 pn # T1291511. outside diameter is too large to fit properly. is there another option or part number
asked and answered. the cam ladder seal located beneath the valve cover and on top of the cam ladder. part T1291511 is a different seal that is fitted to the coil and seals at the top of the valve cover