Not sure about the Runva's, but do they have drain holes on the motor housings? I noticed you installed upside down which is common with warn winches on patrols, which if not done correctly results in drain holes becoming fill holes, not good for reliability at all, and why warns seem to fail from water ingress when it is the installer who failed

Good write up though mate, if I was buying a winch new I'd probably get a runva for the value for money.