Stock Titleist drivers, such as with the M+, will have a swing weight of D2-D3. Depending on how you like the feel of the head, increasing the weight will trend towards feeling more hammer like. Those of less strength trend towards a lower swing weight to be able to control it. The drivers designed for women will be C9-C10 as a baseline. As part of a custom order or a later replacement, other weights can be used to adjust the swing weight.

Thanks Don O, I was going the try 11g or a 7g from my stock 9g and see if it makes any difference. I'm looking for better accuracy.