Percentage Play in Grand (2)

I found another grand slam board in the local game. I arrived in the grandslam with the following auction:

North	East	South	West
1H	2S	3C	pass
3S	pass	3NT	pass
4C	pass	4D	pass
4NT	pass	5NT	pass
7C	pass	pass	pass

West started with ♦K, plan your play!.

Dummy

♠ J85

♥ AKQ972

♦ void

♣ A765

Declarer

♠ A43

♥ 10

♦ A987

♣ KQ964

How do you proceed? Below are the choice: -Finesse heart, but I think no one will choose this as its percentage is only 50%. -Ruff out the diamond 3 times, but you sort of entries to do this. -Draw trumps, if 2-2, then you ruff out heart to establish it. 4 heart tricks will bring you home. -Draw trumps, if 3-1, then you have to pray to get 5 tricks heart. There is a small variation, when the trumps divide 3-1, when you are in the South, you can finesse the heart. You have better percentage if East had 3 trumps (vacant places). If, West who has long spade, then you have to pray that heart no worse than 4-2. I failed to bring home the contract when trumps divide 3(west)-1(east) and west has 5 heart to the Jack and East has a singleton ♥8. Anyway I have executed the best percentage play.