[crawler78]

I had a regular Kp and it was fine but I used a LP tank. I sold it to a friend and he only has HP tanks. For him it shoots over 300 and they can't get it down. I gave him a spyder spring kit but they still have to stock in it. Besides putting a reg on it any ideas?

[99BPS]

Spring/Reg.

Those are the two ways...or a lower output tank.
But this is normal, low-output to high output means change in velocity.

[crawler78]

Yep, that was all I could think of