hi - I have a extreme c&c level 10.Paint is fed by a halo B,1st tourney out it ran well all day,except for a barrel leak.I changed the carrier to next smallest.It now has a 1 carrier,3 shims & the spring with the coil cutt off.The next tourney i played i had 330 fps over the crono & dialed the velocity down.The gun would not fire now so i changed to the smaller spring.This now broke paint & had too much force from the bolt.It also had bolt stick, &sever venting out the back.Also i noticed if the field strip screw was too tight the bolt would not release.I have now changed back to the cutt down spring & still breaks paint & vents out the back.I have not got a longer spring supplied with the level 10 pack.Would this cure the venting or would this make matters worse by having to increase regulator to fire the bolt ?.All this happens mainly on hybrid mode.THANKS in advance.

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