Has anyone attempted a caliber barrel change on the Hatsan Blitz? I'm curious to know if the barrels of different calibers can be swapped on the blitz receiver. Hatsan reps claimed that the pellet probe would also need to be changed but I can't Imagine why yet. And of course the mags would need to match the caliber. If Hatsan offered this as an option along with good maintenance and repair info and support this gun would have made much more noise in the industry.