Replaced Hawke 4-12x50 with leupold MK Ar 6-18x40

The Leupold 6-18x40 replacement has my Air Arms TX200 shooting much better than it did. I like my Hawk Sidewinder 30SF but not so much with the Hawke Airmax.4-12x50. The turrets are muschy and most of the time I cant hear or feel the clicks on the turrets. Maybe I just have a bad Airmax. Have any of you had this problem with the air max? I think i'm going to send the Leupold in to have mildot reticle installed.
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