I was having the same problem. First get some WE .4's and .3's. The .4's are more consistant and the .3's have better range. Second take the gun apart teflon tape the cylendar head then disasemble the hop up and teflon tape the end of the bucking. I found doing this helped the inconsistant left and right curves. The m28's compression sucks so this helps get some more power also. And make sure you clean the barrel properly, the gun comes with all sorts of gunk in the barrel.