[tinkerman]

I agre that since you said he is tight and because you haven't mentioned he is stealing more than his share a raise is wrong. If he doesn't fold on 4th, you are making his mistakes smaller or in fact correct to call on 4th.

He should bet out on 4th, whether he has pair his 9 or not. Even if you have to peal another due to the pot size. Its then a play for him to take it down on 5th or 6th.

Since he check 4th, you should bet 5th.

I would never bet on 7th. It is so unlikely he would call you without having you beat and could easily raise if he had a good hand.