Jerome,

I think that I'm a bit confused, so let me try to understand. You say that you are left handed, right? Then you say that your drives are straight but that you end up on the left side of the fairway, right? If these are true then in my view you are blocking/pushing your drives out to the left, correct? So if your driver is set with a draw setting I would think that the ball should curve back toward the center of the fairway. So in my non-professional mind I would think that changing your settings to neutral would cause the ball to stay out to the left. So I would think you should not re-set your driver. But here is another thought. I believe that the Sure-fit guides (D1, A2, whatever) is different for left handed clubs than for right handed clubs. You might want to check the guide that you are using to be sure it's the proper one for you. Good luck. Fairways and greens.

I agree with Mark F. Maybe check that the weight is in the correct position. My buddy has same driver and thought his weight was set for draw but wasn’t. Just a thought. Hope that helps

Thanks Mark for honesty
Makes a lot of sense what you have wrote .

For a left handed player, D4 is the Neutral setting. Changing to A1 will add 0.75° of loft. If you are looking to add some draw bias you could try a setting of C3.

You best bet would be to go back to your fitter. You swing may (probably did!) have changed between your fitting and now.

Thanks much appreciated

Try all the settings just to see what happens. All heads and shafts are slightly different and may act differently. You can always go back to your settings.

I would say change it, you can always change it back.

I agree with 19thhole. Go back to see your fitter. He is the expert/professional. I had an issue with mine and that is what I did. BINGO. Problem solved in less that fifteen minutes on the range.

Go back to get fit again.

As other's have stated for a lefty D4 is standard setting and if you went to A1 your loft would increase .75.
If you want a draw with your current loft you could try C3 and lie would by .75 upright or D3 and lie would be 1.5 upright. You could also google 917 performance guide left hand to see all the combinations for fade, draw, etc.

Not all fitters are created equally. I'm unfortunate but I've encountered some who couldn't fit a chimpanzee with a banana. You may want to take a lesson with your local PGA teaching professional. Talk to him/her about your problem, then hit a few shots and let them see for themselves what's happening. They could make some tuning suggestions.

Certified fitters know their stuff. I question brick and mortar sale clerks disguised as fitters. It all depends on where you go for a fitting. I am very selective and there are only two in my area I trust and both are Titleist certified and have been at it for many years. Research the fitter you are going to. With respect.