Are flywheel bolt holes made to lock the bolt in?

[davepl]

I ran the cleaning tap through them a number of times with a driver, freed them right up. Since it's a cleaning tap and not a real tap, not much metal was removed at all.

Other than what looked like maybe anti seize (!) nothing came out, but it was every hole, so I'm thinking it might still have been some kind of retention system - but it certainly would screw with the torque values.