1998 115 Oil Leak (#J115ELECM)

[domars]

I have an oil leak that seems to be coming from where the fuel and oil enter the engine. I tried to tighten the allen screws around that assembly but, I wasn't able to find an allen wrench (metric or SAE) that fit snug in the hole. Two questions...What size allen should I be using, and is there a gasket kit available? I could only find the entire Fuel Pump Assembly.