I went to a local dealer, could not even find it. (4 stroke central)
I went to sbt, and bought the wrench (15mm). Got home and it would not fit. Guess what, I tried a 17 again and it fit. ha ha
So i loosened the other allen bolts, then tightened them all down evenly. I took it for a ride again, I am so happy with the way the engine is running. Its a rocket!
Then I hooked it up to the hose on the dock and it had a huge leak. I think the gasket broke in that spot from running it loose. I'm going to get a new gasket and try again.