Had mine a couple of weeks also.So far it has been good to me. Mine loves the h&n field target trophys 19.91 grains. The heavy pellets i got JSBS will not group good. Good luck with yours when you get it.
I've got the 135qe in 25. Right out of the box it'll shoot jsb king 25 grains pretty well. I've got about 600 pellets through it and it has settled in nicely, mine does not like nor has ever liked light pellets. I've tuned mine and right now it'll shoot anything I throw down the tube in the mid to heavy side.
"What did you do to yours for tunning?"It's in a couple of threads down
Ordered a UTG 30mm SWAT 3-12x44 AO Rifle Scope for the 135.I think I'm officially infected with the disease.Regards,Jim