2,000RPM = 2,000 VIBRATIONS PER MINUTE. I’ve seen carburetors vibrate loose and fall off even though they’ve been hand tightened with a wrench to the point where you think you’ll strip a fastener or stud. Always have to check the fitness level of original/old/unknown components too.
The torque charts in the service manuals for specific fasteners are there for a reason – no matter how anal they may seem!