I hate to say it, but your probably end up returning it for a refund!
The .177 barrels on the new models are awful! I was a member of the Kral FB group, and saw it time and time again, some people trying allsorts to get them to shoot right, and others who had returned there guns 5 times, and came back the same!

On another note, the .22 seem to be very good, I had one myself, accuracy and trigger where very good out the box, but it was making 9.4 ftlbs.
I decided to rectify this myself, yes there are 3 anti tampers on there, one being an helicoil you have to remove and replace if you want to get to the HST.

Having 2 crickets I hardly used the Kral, so decided to sell, took me a number of months to find a buyer, and at a knock down price due to the bad reputation the .177 has, they are all getting tarred with the same brush!

John