Techtip video: deans plug is loose
When battery power is strong, deans plug is a better choice than the tamiya plug. However, upon prolonged use the plastic shell of the female plug may deform giving excessive room for play and loose. You may use a flat head screw driver to ply open the flat metal plates on the male plug so to make things tighter. If that still doesn’t work, female plug replacement may be the only way to go.