IMO, the shafts being blue indicates the root cause of the problem is a lack of oil to the top end(or as mentioned, possibly excessive leakage around the stands).
Even if the holes to feed the valves and pushrods were in the completely wrong place, that would have no impact on how well the shafts are being lubed....... Which appears inadequate in the pics.

I think if you solve the issue that's causing the shafts to turn blue, the other problems will resolve themselves.