Hi duffer, I`ve owned this club since it came out and have never had any problems with it (except to blame it for My mistakes,lol) but as with Any "partial" hits, it may not work the way you want it to. For example; Hit at 50% of meter power might only have a 30% effect of Real power, Hit at 75% of meter power and it could be only 66%, etc.. Most of the clubs work similar to this and that is why it`s preferable to have a FULL shot, in real life or here. It`s much easier to judge the expected results this way rather than guessing how much "power" to apply when "in-between clubs". Please DO NOT take my numbers above as fact. Those are just Examples.
If you have these issues on level ground, no wind, Full power, etc. then there is a problem and I would contact WGT. As for me, I`m still learning the Partial shots on my 64 degree wedge and expect to "know" this club after a lot of practice, and then some,lol. GL