I am currently using Harvey Penick Fire Steel Irons. The wedges I use are standard from this set: 10, A, S, & L. I believe these are lofted 46, 50, 56 (could be 54) and 60 (could be 58). I am looking to replace the S and probably the L (maybe A?) so as to have a set of wedges, as I am very inconsistent with the S often hitting the ball left. I am consistent with the A & 10 and pretty good with the L. I am wondering if the design of the S is more for bunker play and that is affecting my fairway play.
I remember the Fire Steel from back in the day. Very difficult to understand why you are having the difficulty you are without seeing you hit the wedges. The S going left could be simply the lie angle is not right for you. There are a lot of great options with a variety of sole designs that could really be beneficial, but again, without evaluating you it’s hard to make a specific recommendation. If you just want to try another wedge in the 56, you might look at our M+Series. It is the most versatile line we carry. We also have an FGT wedge with is a little larger profile that some like for the Sand Wedge. We also have the new TSW wedges with a very versatile sole design that many players prefer. You should be able to use the S wedge from the sand or fairway, or rough. Not knowing the specs of the Fire Steel (lie angle, sole width, bounce angle), I can’t say if there is something about it that is causing your problem. The only guidance I can give is to have the lie checked on the S to see if is in line with the other wedges. It could be too upright, which will influence shots to the left (for a right handed player). If so, it can be bent to the proper lie for you. Other than that, you could simply try an new 56 to see if it works, or get a proper wedge fitting from a qualified fitting professional.