supernoob3000

I've recently bought two Mavericks and took out the air restrictors after trying it a couple times, stock. The barrels seem to fit stefans pretty snug so there doesn't seem to be any reason to replace them with pvc. After the restrictor mod, there was good improvement in range but not that good. It doesn't fire as far as a modded nite finder, even. My question is : I noticed that there's no rubber or soft plastic seal from plunger tube to turret- there's a slight gap, too.

What's a good way to create a seal that seals a moving part such as a turret? And what's one possible way to increase the air flow? I noticed that the plunger tube's hole on the Mav is a lot smaller than the hole on the Nite.