2013 Cold Start Shaking - Head Gasket?

I wanted to update with the current situation. The head gasket is totally fine, there haven't been any more cold start rattles (just slightly rough starts but not a full-on misfire), no coolant level drop, no coolant in the oil, etc. The reason I mention coolant in the oil is because I just did the first oil change on this one. Boy did I mess it up! I put the O-ring on the filter canister below the groove instead of in the groove so on the first start it sprayed oil out of the housing. Lesson learned. I think I also overfilled it because I wasn't sure how much needed replacing after redoing the oil filter, but oh well.

I have an oil catch can, just need the nipples and maybe some extra hose, probably this weekend, and then I can install that. Considering the temps here, I may simply install the OCC and not remove the manifold until spring, when busted knuckles are less likely. Then I'll do the EGR too. Probably not a critical thing though, considering the extraordinarily clean state of the EGR pipe.

 

I know, but it doesn't seem to be causing an issue so far, many have said that 1/2" or so isn't worrisome, and we live on a hill, so it's very hard to get an accurate reading. I might look into it further and check it some time when it's parked for a while on a level surface, but it's not top of my concerns at the moment.

 

Posting an update a few thousand kms later and now that it's warm enough to do an involved task without busting knuckles: No further evidence of any issues, the oil catch can is installed and working admirably, and we just took the EGR system apart today and cleaned it. It was in excellent shape, with hardly any buildup in the fins, and probably the majority of buildup was just lightly accumulated on the valve plunger. I'm pretty sure we're in good shape for another 160000km at least. We didn't take the intake manifold off, but I did run a pipe cleaner up the EGR tubes and it came out quite clean.