Beware of James Gaskets* "Umbrella Valves" They do not sit flat when installed, & if used, causes lots of puking out the head breathers..
See the attached picture..
James Umbrella on Left vs HD Umbrella on right. I think you can clearly see the problem..The shoulder holds them up, not permitting them to seal. Pencil pointing at shoulder (not good)..
James Gaskets has been notified about this problem & was reported to say they are stopping current production of these & re-designing them..
But as for the ones already out at different parts suppliers, you may still be unfortunate & get this defective part(s)... So hopefully you can be aware & avoid this freaking headache..
If you contact James Gaskets with these bad U. valves, they are immediately sending out new HD replacements, till they re-work their mold.
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