Hero LP (950) TAG, raising prime hands showing up huge at showdown even when I lose. Regularly raising instead of limping in. Double barreling most hands I raise.
V1 SB (240) old ATC lots of history with this guy... At my table last 2 days, calling me very light almost always even though he knows I don't play junk. Beat my AA yesterday with 63o. If he raises he has a monster.
V2 BB(420) 30ish nit. Knows what he's doing. Doesn't play junk that I've seen.

1 limp, hero raises to $18 with KsKd, fold to v1, call call fold. 3 way to flop with position.

Flop (55)
Kh 5s 4c
Checks around

Turn
As
Check
Check
Hero bets $40, call call
(175)

River
Qs
Check check
Hero??

Side note... Yesterday v1 caught straight on turn with 63o against my aces and c/r me all in on K452 r board

Bet the flop FFS

Bet flop.

As played, bet $75. Probably fold if raised. I wouldn't expect a bluff raise from these two but you played this weakly enough you might get a raise from two pair so you might want to make a crying call on a small raise. I don't see going bigger then $75 here because your mostly looking from crying calls from AX.

Just checking behind isn't terrible here. If I got a feel that one of these two might be going for a check/raise I would check behind. Given your descriptions and the way this ran out there isn't much worse that is going to call so there isn't much value in betting anyway. If you think an AX is always going to call or you might get a call from even worse hands then betting is better.

Bet flop. As played b/f $100 on the river. The ace is your gin card because it gets you paid. If they called turn on a draw then so be it. Would have expected a turn c/r if they turned 2-pair, so I'm not too terribly worried about getting raised off a winner.

We got it 3way in position preflop, so I'm ok with it.

I'd bet the flop. We have an aggro raisey / double barrel image and at least one guy who thinks we are FOS, plus the BB is deepish and we'd like to play for stacks (which is going to be hard to do if the flop checks thru). I hate the flop check.

I'd probably pot the turn. If anyone is calling a big bet, they're calling a PSB, so make it a PSB bet.

I can't believe we're 3way on the river after having flopped a set in a raised pot and we can't even easily play for stacks. Anyhoo, I definitely feel committed against V1 who only has about a ~PSB left. Against V2, not so much. I probably bet/fold like $125 against V2 (and commit against V1).

Gomg,bettheflop,imoG

I like the line. I would have checked the flop too, to let the others catch up, no need to scare anyone away. As someone else said, if a draw called a bet on the turn, then thats a bad bet and a beat on the OP. But I otherwise like the line. I'd put $80 out there on the river.

Bet the flop for $30.
Bet the turn for ~half pot whatever that happens to be for the number of callers that you get.
Bet the river for V1's remaining stack if he's still in the hand.
If V2 is in the river think about bet/folding, but def bet ~2/5 pot on the river.

We flopped the nuts. Get some money into the pot!