Orange invert mini bolt.

[Bolter]

it's had around 2000 balls through it.

Running at 280 fps on exactely 200 psi, everything is stock setting.

Try it at one click below 200psi.

the MK storm guns are set with.

Fire Mode - Millennium
Dwell 35 (+7)
BIP 6 (+5)

These settings were tested by us and finalised by Jon Bonich (uber gun tech) and they work. Cant hurt to try

As suggested before, give the thing a clean out, properly. And be careful not to loose the check valve.