i noticed a little bit of oil leaking down the block behind the #5 exhaust port what around there could cause this?

 

I will bet that it's camshaft position sensor. It's too high for the turbo oilreturn. Volvo don't have a convential valve so it's not likely a valve cover leak. The cam sensor oil seal is not hard of a job. I think you have to make a specail tool to hold the cams. It's not to hard (see Haynes manual)

 

Nah, you don't necessarily need a cam lock tool. I swapped cams once with a tool and the second time without, just watch what you're doing.