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ok a little update.... i found something that i have fixed and i am on the right track but i am still having problem....
first off i changed the cylinder and the cylinder head and i learned that you cant do that the cylinader head is different and a normal version 2 cylinder head. so i changed the cylinder and the cylinder head back and it helps some but it sounded like crap and droppd my fps lower to about 280. so thinking that it is the old cylinder hear i bought a new one (systema Area 1000) and i also changed the hop-up bucking to guarder 170% bucking and retesting and i am getting 390-399.
now for the question portion.
1. when i pressure test the cylinder/piston without the nozzle it works great and there is no air leaking. when i put on the nozzle with the air leaks around the base back toward the cylinder head. is that normal?
2. the cylinder sleeve that comes with the GR-25 is not ported at all. will installing a ported cylinder help? (i have one from my TM m4)
3. with these upgrades where should it be shooting?
Guarder Torque up gears
Guarder metal Spring Guide
Grauder SP150 Spring
Guarder Polycarb Piston
Systema Area 1000 Polycarb piston head
Stock G&G Cylinder
Stock G&G Cylinder Head
Guarder Tappet Plate
Guarder 170% hop-up bucking (turned off while chrono)
650mm Madbull Ver 2 Tight Bore Barrel
Thanks Again Mike
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