Do you have a pic or any info on that oil gauge? I've never seen one that only reads up to 10 psi. Sounds perfect for the Enfield.Ace, is the oil pressure the same for the twins, or do you not know that answer? I know the design is essentially the same, but I hear the older twin worm drives aren't as prone to shearing off and failing. Perhaps B.W. might know the answer if you don't.