KWA M93R NS2 Accuracy Problem

[BlueHorizon]

Hi there, a couple months back i received a KWA M93R, it was a great pistol all round except the fact that the bucking was actually a little bit bigger than it should be (In my opinion). After taking it apart only a week ago i found that trying to put back the bucking inside the hop up unit was immensely hard, and with some lubricant, managed to squeeze it in. The bucking had always been oval and i am guessing is what caused my bb's to hop upwards and sometimes too the right. I have tried everything to stop the hop but it seems to be getting worse every time i try fixing it. I have tried adjusting the hop up and cleaned the barrel but it always seems to come down to the bucking, i haven't modified it or changed it since i got it stock.

[Styrak]

Adding more lube would be making the problem worse. Stock KWA hopup rubbers swell if you add lube. Get an aftermarket rubber and you should be good.