I had problems with my Daystate Airwolf MVT when I brought it new, it went back to the factory 3 times before it was perfect. A friend of mine brought the same model and had similar problems with the barrel/accuracy.
Daystate will sort this gun out for you and it is worth the wait.
In my experience, since the last time it was back (4 years ago) it has been 100% reliable and accurate, including a few 10 shot 14mm c-t-c groups at 50 meters, usual accuracy at this range is sub 20mm 5 shot groups, all day long.
The adjustable power in 1 fps increments is brilliant for fine adjusting of holdover ranges with mildot scopes.
This is my most accurate close to medium range "off hand" rifle due to the almost instant "lock time" giving tight groups.
We shouldn't have to go through these ordeals when buying a new gun, it completely shatters your faith in the manufacturer.