Yes they are x2....or should be. Get a good flat surface, lay the rod on it's side, and press on the big end so that the side of the big end is pressed against the flat surface, and look at/measure the distance between the side of the small end and the surface. Then flip the rod over and do it again, and you will find a different distance from the other side of the small end to the surface. I measured some original 340 rods and IIRC got about .060" or .080" offset. It was not precisely the same rod-to-rod.
Just another reason to put the stock rods in facing the correct way.
I did not check my 1 set of SCAT rods to see if they had a similar offset.