If you're trying to break 100, I can't stress enough the importance of hitting crisp, accurate chip shots. It's the ultimate stroke saver. During the Hawaiian Open in 1981, I was practicing chip shots with Hubert Green, who I think is the best chipper in the history of the game. Hubert took me to the cleaners that afternoon, but he also gave me one of the best chipping tips I ever received.
Hubert suggested I practice with a more lofted club for chips, such as a sand wedge instead of the traditional 8- or 9-iron I had been using. With the higher-lofted club, I could play the ball farther back in my stance and still get it airborne enough. This new ball position created an even more pronounced forward lean of the shaft at address and an even more downward angle of attack through impact -- both crucial to hitting crisp chips.
As he explained to me, increasing the angle of descent into the ball allowed for greater consistency in chipping from all kinds of different lies because I would strike the ball higher on the clubface. I'm sure this tip can help you, too.