Has this Schrade been repaired?

[confucius37]

I recently picked up this Schrade 899 stockman on the auction site. Looks pretty good in pictures and the description just said that the spey blade had some play...turns out that was a bit of an understatement. It looks like the spring on the secondary blades is the wrong thickness (it is the same thickness as the main blade). The spring doesn't even feel matched to the blades, there is no tension on the spring when the spey blade is in the open position, this means the blade can literally move around just by shaking the knife by the handle (not even touching the blade). The punch blade does not close on its own, it has to be pushed closed.

What confuses me is that I cannot see any evidence of repair just looking at the main pin, I would expect to see some evidence that it has been repinned, but the bone covers are in excellent condition with no cracks or chips.

Does anyone have any ideas of what happened here? Anyone have any suggestions about repairing it or should I just leave it be?

Here are some pics of the knife.