...as confirmed by Crosman's CS department.
I know what Charlie says about the Chinese guts, and he's got a point. I recently had a B19 trigger wear out (the edges around the sear mating surfaces rounded off) due to loose tolerances and possibly a softer material. FYI - the B19 is what the Quest was before Crosman started distributing them.
Also, I've had 2 Chinese springs break (the B19 and a B22), and none in a Gamo (although it can happen).
Now, it's possible that Crosman got the Chinese factory to up it's quality control, but I'm not sure that this has been sufficiently borne out by experience just yet. On the other hand, if you need a fairly inexpensive "drop-in" repair for a Gamo spring, Crosman Quest parts are pretty much the only option out there. You can get a spring and tophat delivered for about $12, and it'll be a better fit on a Gamo guide than the Gamo spring was. Will it last? Again, this is stll something of an unknown.
By the same token, though... my Quest (after a new factory seal and spring) does shoot unusually hard - even after probably 1000 shots. It consistently spits out CPL's at about 930 or so... none of my stock Gamo's have been able to match that. Of course, maybe I just got lucky...