Source of leak/seep?!

[ChiefK]

When I took the bike out for it's spring cleaning, I noticed a buildup of "gunk" on the lower front part of the left side of the engine. It appears to have built up from the back forward. After degreasing, and going for a ride, there is a small seep.....not enough to even come close to a leak....that appears to be coming from between the cylinders at the base of the engine, deep in the "V". I've circled the small, inaccesible, silver "thingy" that it appears to be seeping from. Any idea what this is/does, and how concerned I should be? I've had no noticeable fluid loss after 5k miles.

Thank you!