Cm2250 valve guide seals leaking

[Hammerhead]

(10-21-2016 )Mr Hagg Wrote:  I've done a few of these and what I found was the old style seals would come loose from the valve guide letting oil seep down guide. While the seal would stay with the valve not sealing anything.

(10-22-2016 )overshot Wrote:  Probably not.
The new updated valve seals are the way to go. Not that expensive for the parts

Do you or Mr Hagg happen to have a part number for the "new" seals?
Or do you know when the update came into effect? My inframe/head was done in May '14.