HI dbane 261 : You're on the right track -- If your motor was assembled some time ago and you used anything other than assembly paste/grease , it probably has leaked down and priming it will only " rinse " the rest of it away . DEFINITELY use a proper break-in oil ,prime it first and follow the proper procedures . Many good tips on the cam company web-sites . DO YOUR HOMEWORK !! I have a one-hour-old 250 with a lifter with no bottom in it . I wish I didn't have to speak from experience !! All the best -- FLEET / DON
