That may be true but that will also create a whole raft of bad press for Kioti. You don't design change something like that without notification of all previous owners because it's a liability problem.
You are dealing with flammable fuel and a hot engine.
My M9 developed a fuel leak in the right side saddle tank, the weld around the drain bung was perforated. It was out of warranty and Kubota replaced the tank at no charge, well, I replaced the tank myself with one supplied from my dealer at no charge...no biggie.
Fuel leaks are serious liability. Fuel leaks underhood with hot components are even a bigger liability.
If it was my tractor and my hard earned money, I'd be modifying the seperator plate but taking pictures to go to the dealer and/or district rep and I'd be demanding a repair or refit.
Candidly, I peruse this site daily and there are a whole bunch of posts on here that I catergorize as basically worthless blather about imagined problems. This isn't, as evidenced by the accompaning (in the thread) pictures.