$1/$3 PLO live game. General notes - very weak passive.
I straddle utg to $10, villain who is UTG+2 makes a 3bet to $20, 5 others call and I close the action with 96dd78.
Flop T92 rainbow with one diamond, I check (not sure about PLO and leading ranges, but I'm pretty sure I don't lead this?), villain bets pot $140 with $80 behind and it folds to me. What's standard here? Just go with it and stick it in? Call and re-evaluate? Thoughts on what Villain's range should look like potting into field of 7?

Thanks heaps all.