Quick question about my boost gauge

[TooFastTooG]

Hey I just installed my Autometer boost gauge and everything works fine I'm reading 11 psi which I hear is somewhat normal for a stock 95 gsx, anyways my question is that when my car is completely off the needle actually sits a little below 0 on the vac side. Just wondering if thats normal I would have thought it would sit at 0 when off. Thanks in advance for the help

 

[blackGSX2g]

Every Autometer boost gauge I have seen does that, so I wouldn't worry about it.

 

[95DsmTsiauto]

mine does that also.. Just one line under 0. I also read -20 vac and 11 psi but now i must have a leak because i read 7 psi and -15 vac