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Either you were fit badly or something has changed in your swing between GG and now. It might be as simple as ball position or as complex as a change in the swing.
If you are struggling, might I suggest the range and a practice session or two as an alternative to selling the club. If that doesn't fix it, then consider trading it in for a club that has no offset. If you are happy with the club itself but want to prevent the ball going left, another alternative is thicker grips. BDC uses really huge grips and apparently that makes it very hard to hit a draw/hook