• The AGN App is ready! Search "Airgun Nation" in your App store. To compliment this new tech we've assigned the "Threads" Feed & "Dark" Mode. To revert back click HERE.

fx bobcat mk2 regulator issue

My friend gave me a fx bobcat mk2 .25, After the decomposition express to me,in his home regulator is 140bar, but when I received, I assembled, regulator become 110bar,(jsb 1.65g 869fps)I have not adjust anything, why the regulator changed?(impact on passage?) 
Do I need adjust the regulator pressure?

I watched this video 
and i cant unscrew this .

bobcat mk2 is also using this method to adjust the regulator pressure ?

sorry for my bad english.