See, the problem here is that you and the others who sometimes talk about this story didn’t read the actual story in question. The thing that brought Wolverine back wasn’t simply “a big power source”, it was akin to a cross between the M'Kraan Crystal and a Cosmic Cube. So it wasn’t really anything Wolverine did consciously that restored him, and the power of the dingus was more than sufficient to recreate his Adamantium skeleton as easily as his pancreas.