Ive been running the xt90s for a couple years. They dont get easier to pull apart. Maybe some dielectric grease would help but I havent tried. Ive actually started going away from connectors altogether and just using individual bullets. The xt90 is a good connector though. You just need extra wire so you can yank them apart. Maybe if you pull one side out of the connector and leave it loose would help too. You could probably have someone 3d print a cover for each individual bullet if you werent comfortable with heat shrink or whatever.