Some big pair stud situations...

[nef]

1) I have Kings wired with a 4 up, one player calls and I raise on third. One King is out. One cold call, and the bring-in and limper call. I bet 4th. On 5th the limper with XX 4c 7d 7s acts first and bets, a player folds, I am next to act with KK 4 2 T, the bring in is behind me with XX 2d Jh Ac. Should I raise? I suspect 7's up or 7's and a 4-straight or three 7's is betting.

2) I have Aces wired with a 7 up and have been betting. On 6th I have (AA) 7 8 9 K and player who has been check/calling becomes high with XX 8c 6h Jc Jh and bets into me. XX A K 2 T who has been check/calling along is left to act behind me. 2 7's a K and 2 T's have folded. I put the bettor on J's up. Should I raise here?

3) I started with a (A-x) y flush draw, caught an Ace on fourth to make Aces. I have been betting all the way. I make a 4-flush on fifth. I have two opponents calling me, one with what appears to be a straight draw or medium pair, one with a possible flush draw. I have unimproved Aces on the river and am first to act. What should my plan be?