Gayle struck eight fours and five sixes from 128 balls in a little over two-and-a-half hours and shared 143 for the first wicket with Daren Ganga to help West Indies reach 207 for one when stumps were drawn on Thursday.
"I just tried to pace myself out there and got great support from Daren Ganga, but I am disappointed I did not get the hundred, and hopefully Daren will get it for me," Gayle said after play.
"I think it is a mind thing, but I am working on it. I have been consistent in the series, having past 50 a few times, but I am looking forward to passing triple figures.
"There is always room for improvement, and everyday as you play this great game, you learn something new, and want to make my contribution count towards the team."
Gayle acknowledged that it was rare for West Indies in recent times to get past 200 with only one wicket down, and they must now use that platform to build an impregnable total.
"With this sort of start, anything over 500 would be nice and try to put some pressure on them because it will be difficult work for the bowlers to get 10 wickets on this pitch," he said.
"Hopefully, we can continue to play as positively as we have so far and put our best foot forward and bat them completely out of the match."
Gayle felt the Indians had bowled well early on, despite his belligerent batting, but things changed after a 25-minute stoppage for rain about half-hour after play started over two-and-a-half hours late.
"I thought they really bowled well early, especially Munaf Patel," he said.
"Even when he came back for a second spell, he put the ball in some good areas, and continues to bowl as well as he has been throughout the series."