Real nice tru, have you changed the locking system to scoring the inner pipe with the pipe cutter? I'm curious how effectively this secures it.
Hey Asdaq, I found that the scoring did not make a difference and the mesh up was not tight enough. What I did was ever so slightly deform (not noticeable) the coupler edge that fits over the pipe sections. All you have to do is give it a twist and it holds tight. Another option is to not file all of the burrs on the the cut edges of the pipe and leave a very slight lip.
I don't have a large battery spring like my other mods that would push the couplers apart. At first I measure for and used a magnet at the base of the battery but after a couple of days I found that using a weak copper spring which I crushed down to fit worked better. So far so good.
An important note Asdaq, Don't use those tiny digital meters to set voltages, It causes the D.P. chip to lockup. If I scale down to 3.24v it gets stuck there and have to power down. My multimeter works fine on it. So the draw back is putting the circuitry into a box mod with one of those digital meters.