I bought my Sheraton about a year ago new and mine does the same thing.
Interesting though; I went to GC, tried the one on display, liked it and the sales guy said he had a brand new one still in the box so I decided to buy that one. When he brought it out I found that the one in the box had a “significantly” thicker neck than the display model - big difference. Even thought I would have preferred to buy the one in the box, I liked the thinner neck so much I ended up buying the display model. I would have thought the necks would have been more consistent.
I agree, it doesn’t take much pressure at all to alter the sound. I’ve got used to it and, so far, I haven’t had any problems at all.