Tm ksg hop up problem

[Ghiggio]

I bought 6 months ago a tokyo marui ksg that my friendI hpa tapped.

It worked very well, then I didn't play airsoft for 6 months.

Last week I tried it and one of the bbs shot by barrel on the top of triangle of barrels flies much higher than the other 3 bbs.

It means that the two bbs on the bottom consistently hit the target while the third one flies in the skies, like the bb has been over hopped.

The problem is that the hop hup of ksg is fixed and cannot be regulated.

The other day my friend disassembled the gun (a nightmare) and everything seems fine, all the barrels are clean and hop up buckings seems fine.

After reassembly the gun started to have the same problem while shooting.

I tried also to change bb weight (from 0.25 to 0.32) and power (from 80 psi to 140 psi) and the problem is always happening.

Does anyone faced the same problem? Do you have advices how to solve it ?

[ButcherBill]

I honestly have no idea, but... if the hop is fixed are you able to turn the inner barrel so it hops in a better angle?

[Ghiggio]

5 hours ago, ButcherBill said:

I honestly have no idea, but... if the hop is fixed are you able to turn the inner barrel so it hops in a better angle?

 

Unfortunately the inner barrels seems to be fixed at a certain angle so I cannot rotate them. I had same suspect because the barrel on top is kot exactly straight (hour 12), but more like hour 2.

Do you know if the barrel on top need to be at hour 12 ?