Not too bad on startup, but more with revs, and slightly more with let off (car is not streetable and has clam off, so I cant actually drive it around). Smoke is never heavy, but is visible, tuner won't touch it until smoke is gone (which is just fine of course).
Symptoms sounds a bit like one of two things... an oil ring, or some leak that only shows under vacuum at the valve seals... (i've talked to two folks who said they had the latter problem with these symptoms on other cars) Bottom end was fine before the head swap, so rings seem very unlikely unless I'm just particularly unlucky, and the ring went on startup after the headwork.
Compression varied a little across cyls but not bad, and as I said, it all worked fine before the head swap.
Adding the catch can to verify that it's not intake oil, and begin monitoring for blow by buildup in the catch can. Then probably next I'll have someone do the seals. If that doesn't do it, I'll need to invest in rings/rebuild.
At least that's my thinking at the moment....