Clutch Vibration/Bent Connecting Rod

[John Goodman]

New owner of a 2013 Speed 3, seems stock or at least returned to stock. I've been reading up on different issues to look out for as the vehicle is in pretty excellent shape despite having ~100k on the odo and I want to keep it that way.
In my reading I've seen to be wary of clutch vibration as this is a sign of bent conrods. With the clutch pedal fully released, if I push it just enough to take up the slack at the top, I can feel a minor vibration that changes with engine speed. With other vehicles I've driven this feels about right, but I'm understandably a little paranoid about adding unwanted ventilation to the block in my new ride.
I pulled the TMIC and plugs, dropped a long extension in each cyl and turned the crank until they topped out to get an estimate if one stroke is particularly short and they were all the same.
So now I'm left with the following questions; How much, if any, clutch vibration is "normal"? Are there other causes for this vibration that I can safely ignore or fix with less effort than rebuilding? Is the quick stroke length estimate good enough to feel "safe" to drive without fearing the ZZB?
Thanks for reading, please let me know what you think!

 

[DISIFTW]

It's hard to tell a slight bend tell using the long extension method; best way is to drop the oil pan and visually inspect. The slight vibration in the clutch could be a few things, is it the oem clutch or aftermarket? It also could be nothing at all.

 

[John Goodman]

It's hard to tell a slight bend tell using the long extension method; best way is to drop the oil pan and visually inspect. The slight vibration in the clutch could be a few things, is it the oem clutch or aftermarket? It also could be nothing at all.

I was wondering myself if the clutch plate is OEM or not. I'm going to be doing the VVT tomorrow so while I have it up on jacks I can crawl under and peek at it if there's an inspection plate or something. Any advice on what to look for in that regard would be appreciated.
I can drop the pan too if I'm down there. Would you happen to know if I would need a new gasket if I do so? If so I might grab one first and do that next weekend.
Thanks for the reply!