Also about the soldering use a solder sucker to remove old solder second most handiest tool to go with it, soldering iron being the first
And i agree the portosol pro is the best, been using it on cars for years and when the tip finally seems to not be heating the solder enough change it out asap if your soldering onto the esc, far too much heat transfer there.
The vent on the tip also doubles as a handy heat shrink heaterer.