No Prob
I don't really have a prob hitting dclone, relatively speaking of course. I recomend using dual bartucs for tha AR, and casting enchant from a handy demon limb. Gives well over 15k AR to my assassin. If you are a shield wearing kicker, it would seem you have more cb, but less chance to hit, which is bad IMO because you need to trigger amp.
Also, are you wearing atma's scarab? Without atma's on, he is admittedly much tougher as I believe your CB and damage is reduced insanely.