Add check your tower to the list.

[Neverenough]

I'm sure it says to do so in the owners manual but I'd add checking tower bolts to your check list. I was hanging out with the family this weekend and opened up the front locker and noticed a big bolt or allthread and a nut with a big plate laying in the floor. I was wondering what that rattle was. Anyway the stud fell out. Guess Ill check them more often!

[AirTool]

opened up the front locker and noticed a big bolt or allthread and a nut with a big plate laying in the floor.

Was it your tower? ....sounds like from your lifting ring.

[jkallen21]

Mine is loose - has several threads left before she falls off, but I noticed it and thought I'd better get a ratchet on it before too long.

[Neverenough]

Airtool it was from the tower. I'm not sure which tower I have an 8 220.