I make up my own systems and use 30 Lb. stainless steel leader with the plastic coating. You can wrap the wire A few times and melt the plastic A bit and it fuses to itself. I also use very thin tubing and slide it over the wire ends and crimp it. Pull/pull is really an easy system and you can get very creative on how you do it. I have even attached two carter pins to the end that goes to the servo arm and then slid those through A couple of quick connectors. The 30 Lb wire slips right on through that yellow flex tub and I run that through the fuselage.