Problems with Home depot boost controller.

[92GSXman]

OK Guys, I'm sure I have it hooked up correctly. But I have the adjusting nut all the way out and I'm still getting 20 psi. Do I need to cut the spring, get a stronger one, a weaker one or what? Anyone else have this problem?

 

[92GSXman]

I found out that my spring was too long. I snipped off about a 1/4 of an inch and now it works perfect. It does spike up to like 17 or 18 and then levels off to 15 psi. Is that OK?