LOL, If you have a low pressure turbo, there is no PCV valve.
The loose hose on top of the vacuum tree is the culprit to the high revs, that is the connector to the idle control motor which is supposed to give just enough air to keep the engine at proper idle.
The hose on top of the cam cover is there to catch fumes from the cam area and direct it to the oil separator (under the intake manifold). You done good with a light clamping. Some of the oil up there can be attributed to a hard rubber seal on the oil cap and people who spill a 'little' oil when adding a few quarts.
Sounds like you are good to go for a while. Pay back your buddies!!
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My name is Klaus and I am a V♂lv♂holic
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