RE: Whats the difference in servo extensions?
Look at all the extra failure points you are adding to the system with those "stab in" connectors. I buy bulk servo wire and shrink tubing. Strip the insulation, twist the bare copper ends together, lay flat and slide the shrink tubing over the twisted "knot", then shrink away. The trick is to barely score the insulation and pull it off with your finger nails so that the fine copper strands don't get knicked.