re-raise fold?

[electrical]

Seat four is not too familiar (maybe 30-50 hands together), but seems to be a pretty predictable, straightforward player, though not an ignorant one. I have been winning, showing down quality hands -- not always a given with me. I don't believe he has additional notes on me from any prior play. Seat Six is loose and passive.

Interested in comments both on the re-raise and the fold. I initially thought villain's raise could have been an attempt to buy a free card or two with a big pair+draw, but my opinion changed when he capped.

After villain caps, my thought process is probably obvious. I'm almost a 9:1 dog to fill, getting a little better than 8:1 at the moment, and I could lose a big wedge if we both improve. I have represented trips and he still wants to get his money in.

7 Card Stud High ($5/$10), Ante $1, Bring-In $1.50 (converter)

Seat 1: $282.50
Seat 2: $126.50
Seat 3: $153
Seat 4: $66.50
Seat 5: $541.50
Seat 6: $319.50
Hero: $661
Seat 8: $386

3rd Street - (1.60 SB)

Seat 1: xx xx 3[img]/images/graemlins/spade.gif[/img] ___brings-in ___folds
Seat 2: xx xx 6[img]/images/graemlins/club.gif[/img] ___folds
Seat 3: xx xx 6[img]/images/graemlins/diamond.gif[/img] ___folds
Seat 4: xx xx J[img]/images/graemlins/club.gif[/img] ___completes
Seat 5: xx xx 6[img]/images/graemlins/heart.gif[/img] ___folds
Seat 6: xx xx Q[img]/images/graemlins/club.gif[/img] ___calls
Hero: K[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/spade.gif[/img] ___calls
Seat 8: xx xx T[img]/images/graemlins/heart.gif[/img] ___folds

4th Street - (4.90 SB)

Seat 4: xx xx J[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/diamond.gif[/img] ___raises ___raises
Seat 6: xx xx Q[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] ___folds
Hero: K[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/heart.gif[/img] ___double-bets ___raises ___folds

Total pot: (16.90 SB - $84.50)