there is no one temp to run at with these engines. we can have the exact same engine and mine might run at 240 all the time,yours 210. basically do not tune to temp. I can say we all tune for good bottom to top pull with no hiccups in between.And smoke at full throttle. I personally always set my idle gap[restrictor off] first,then never touch it. then the hsn/lsn I start at flush and usually need to turn the lsn in about 1/1.5 turns. This is with the gen 5.5 carb that i run on all my go-tecs. carb with the red go in the front. the hsn might need to go in a 1/4 turn? once the engine hits the 2 gallon mark I do what everybody else does,switch the rod out for a new one. I also always preheat my engines with a heat gun. If my engine starts to act funny, I do not assume it is the engine.as I usually have all my engines sealed before I run them at all. so 99% of the time when the engine starts to flame out,and I have learned this the hard way,it is usually something besides the engine. I will say that even tho parts are some times hard to get or a pain to get these engines are super reliable. they also last an extremely long time if taken care of properly. I have a 7 port with 12 gallons on it. still has pinch still fires right up when i need it. still competitive. I forgot to mention tune engines after they are fully warmed up! about 3 tanks of run time.