Since a big part of this update has to do with the noise reduction, I thought I'd spend the bandwidth and upload a video of the diesel gen running on veg with the new muffler set up.
if you know these old British designed, Indian made cast iron, single piston beasts, you might hear a bit of a squeak on every intake valve move. I thought that squeak was coming from the alternator with badly greased bearings, but I discovered it was simply the rocker arm (between valve and cam bars) was rubbing against it's spacer. A bit of grease later and the thing is even more quiet.
Maybe next is a little shed!