I notice that my steyr lg110.when i get out of house need 5-10 pellets to be on same value as yesterday. So i make mark on turet on 25 meters yesterday,and when i come out from house today to shot first 10 pellets go 10 cm below. What is the problem? Is problem in temperature? In my house it is around 20 c and outside it is 30 c. And second thing,i notice that when i remove cilinder,i hear big air leak from inside of the gun,from regulator or? Is that normal? Tnx.