Funny this post has been put up because im having the same trouble with my male harris,
Flew him last season 1lb 6 great response,hunted him just under 1lb 6 binding well,i brough him out prob about a month now flew him every single day for 2 weeks response instant any distance,out of trees or when hes flying above me,only flew him twice in the last 2 weeks has i had problems with my scales and work load,weighed him earlier 1lb6 took him out and his response was shit,he came after some wiggling of food on my glove ? when he did come he snatched it and went a field away ... again took some pe