Hey guys. i need some help with my p90. my gearbox is fine, i had just upgraded it with a m130 spring and upgraded the piston, cylinder, and gears. so i know it isn't that. i've even inspected a few times to make sure. so it's either my hop up or hop up bucking. whenever i shoot the gun with hop up all the way down, the bb's will go about 30 feet before they hit the ground (semi and full auto). when hop up is all the way up, the bb's drop in 5-10 feet (semi and full auto. i was wondering if you guys would suggest getting a new hop up unit (i would buy the pro win upgrade hopup) or a new hop up bucking, or both. thanks.