hi my mate had the same model as you and had no end of bother with it one problem after another with o rings .he could not zero it in it was shooting all over the place just problem after problem i thought this was an isolated 1 off thing seems not after reading your post he ended up going back to the dealer and carried on so much they exchanged the rifle for a airarms s410 straight swap so i think the rule of the day is forget loguns give them a wide berth hope this helps take it back and carry on get rid