Troubleshooting a changed 300RR

[tiojose]

out of the box the filter is feeling like not oiled
so before first run i truely oiled it
we ride dusty & sandy conditions
filter should catch dust out of the box

idle behavior tells you to go up or down on the idle jet
rich idle jet gives you no crisp and needs the main valve lifted by the screw to keep it running
idle jet ok, you can drop the valve fullt down at the bottom

dealer putted 175 & 42 he's nuts running like a towing a ton
2nd run putting 168 & 38

[Balkan boy]

Bike runs very strongly now, and radiators aren't holding pressure after cooling down, but the thermostat is leaking again.
I'll try to disassemble it first to see if it's faulty.