I am wanting to read about your experiences with the AirMaks Katran Standard B in .22 cal. Please share all the good, bad and indifferent experiences you have had with this rifle and the company. Looking also for information concerning ease of tuning, rebuilding as necessary (O-rings and assorted parts) and company response to issues or problems. And finally I would like to know how sturdy the folding stock mechanism really is: does it latch securely without flex or wobble and what would you change to make the rifle better? Thanks in advance.