Yea..I changed it out because my gauge was actin funny. Even put on a new o-ring. My gauge just doesn't seem to be actin correct. It sits out in the cold...so I don't know !
Dont worry from a cheapo fleabay to the directly from husqvarna or stihl , noone can tell which of theese reading correctly
What kinda replacement valve core did you use?, a standard tire valve core has a heavier tension spring than a comp tester core and will give a false (low) reading.....
The gauge I got came with replacement valves and o-rings...so I used those. But even those were wanting to hang open every couple of tries