150 FTOPs: KK UTG raise faces nasty flop

[BarryLyndon]

Blinds 40/80
Villain is bad - limp 1010 UTG, limping lots of flops, lots of minraising BS. But, looks like when he's strong, he's strong, so should I just let it go on turn. Cont. bet this flop?

Hero, UTG (2600)
Villain, MP2 (4,100)

Hero raises to 240 with KK, folds to Villain who calls, folds:

Flop: Ah Jd Jc

Hero checks, Villain checks.

Turn: 8s

Hero checks, Villain bets 600, hero calls.

River: 4d

Hero checks, Villain PSB, hero folds.