Thanks Jeremy for the recommendation and I am happy that all is continuously working great with this issue.
Jesse, please feel free to contact me or provide me with a contact to discuss your case regarding these and any other cylinder head related issues with valves, seat rings, springs, guides or rotocaps. Would be my pleasure to help out. Please check us at http://www.mwh.de
Our entire fleet was affected, Wartsila changed the standard 40 degree seat to a 30 degree seat, it has corrected the issue some, we have 10000hr plus and are having heads reworked by MSHS and they are using MW parts, maintaining the 30 degree seat and valve.