hello, if someone has a set of 951 carbs apart or at least the fuel pump side. And has a set of dial or digital calipers.

I need to know the measurements of the grove that the round o ring sits in that seals the pulse cover to the fuel pump body.

I don't have one apart or infront of me or id measure. trying to figure something out from home and not at the shop right now. seing if the large body 951 fuel pump o ring will work for another application.

thanks in advance