Very helpful to current owners too.? I'll have to read this several times to see what ideas I need to implement.
I might have missed it in all the recent emails, but one thing I've picked up from the group over the years is the issue of poor quality control checks leaving casting sand and machining debris is the gearbox.? I'm not suggesting that this is an issue with Rong Fu machines but an improved QC process on the gearbox cleaning before filling with your recommended oil would be something I'd add to your list for any manufacturer.