Oil burn cloud on engine deceleration

Never experienced bucking downhill. I have a 4 speed and a Eddy carb.

So tomorrow I am going to do four tests.
1. Downhill with PCV, 2nd gear, 3200
2. Flat with PCV, 2nd gear, 3700
3. Downhill without PCV, 2nd gear, 3200
4. Flat without PCV, 2nd gear, 3700

I will report back my findings.
I realy like it when a plan come together.
The Eddy will be fine as to sloshing. Can't say about the Sync. No bucking means probably OK,then.

I must say tho, that I would find it highly unusual for the PCV to be the culprit at 3200 in second with fully closed throttle; It's just doing it's thing. If it's pulling oil, the something else is putting the oil in there, and the PCV is just proving it.I think all the formerly presented possibilities are still on the table. For me it would be waste of time searching for a different PCV. Just dry this one up with baffling, and find the source of the "blowby".
I guess we'll see soon enough.