Never seen it but good luck. If there is any corrosion at all on the aluminum parts it won't work. And as a heads up most of the aftermarket rubber parts don't last with the newer fuels but it would be nice if this is an option.
Let us know how it goes and make sure you pressure test and vacuum test it when you are done. Air leaks can be fatal to these engines.
Thanks I have clean valve bodies no corrosion, I as well am worried about the rubber durability to fuel. I am going to drop them in a container of fuel for a few days and see if there is any change in the part.
Just installed the kit last night, the rubber sleve looked to be like a silicone rubber just like the original. I set it in a cup of fuel for a few days no swelling or change. Hope it works long term.I did test it for air leakes with a clear fuel line, no air was entering wile running.