After cleaning and overhauling the VST on my Merc 200 XRi as part of a complete front-end overhaul I find that the oil inlet check valve is now leaking fuel back into the oil pump outlet line. I guess I did something to wreck it while cleaning it.

I know lots of you guys have removed your oil injection systems. Would any of you have a serviceable check valve (21 42481 1) that you would be willing to part with for cheap?

Many thanks