Ok so contacted Hitachi support and seems to be solved.
I screwed up A082. Had it set for 240v instead of spindle plate of 220v.
Next he had me set B083 "carrier freq" to 5 from the default 2. All of the rest of the settings you posted he said was fine. The spindle was much quieter and max temp after running at 24000rpm for 30min was 116deg F. So I raised carrier up to 6 and spindle got even quieter and temp dropped to 110F max. This is without a load. I attempted 7 but temp stayed constant at 110 so dropped it back to 6.
Now I changed B013 from constant to reduced torque and it had no effect.
As far as pins 1u,2v,3w having it wired that way the spindle runs in reverse. Is there a setting somewhere in there that changes the direction back so I don't have to swap wires? This is why I swapped the pins 1 and 2 in the first place but if they absolutely have to be 1u,2v,3w then its gonna take a really long time to cut stuff.
Now you were correct about the ohms. The readings are off. My digital ohm meter was reading 2ohm with the leads touching each other so if you subtract the 2 from the now reading 3.8 and you fall in the range 1.8 across all pins so spindle still good.
As far the the setting A152 there seems to be some confusion. I have seen another poster who tried to correct everyone but the confusion is still there. That setting along with A151 and A153 are in percents ONLY. Range is 0-50%. You cant set frequency there. Now A154 can be set as freq and A155 is in seconds so those are good. Its just those 3 settings A151 THRU 153 that are off. So if you have a recommended setting for that it can only be 0-50%
So I guess all is good. Temp still hitting 110F which for and air cooling spindle I guess will have to do. I will only be cutting wood and foam nothing else so I would guess high rpm is where I will be most of the time anyway.
Thanks to everyone for chiming in, if theres still any other suggestions for lowering the temp even more I'm open for suggestions. Thank!