All looked good when I put back together, I checked again tonight, Both o-rings on, map sensor looks good, pcv valve good. The only thing I can think...
It was from the purge solenoid to the TB vaccum port. I tried taking off the solenoid and blowing through it, can't blow through it, so I think it is...
Update. The vacuum tree did seem kinda wobbley. Replaced the seal with a slightly thinker one. It seems more solid, and it seems to be sealed, unless...