0G940463
mercury part 17280A2
So i drilled the 5th hole to 5/16 per instructions, just it enters past the pick up hole, there’s a lot of meat back there, especially the casting around the driveshaft area. This made me a bit nervous, the issue is the well nut holds to nothing when tightened, it just pops back out. No I didn’t overdrill the hole either. The front and rear of the inlet hole is support casting. Is this normal?