Why is my fuel pressure gauge shacking?

Hi guys i just made a short vid where you can see that my fuel pressure gauge is shacking, before i had one from allstar with glycerin and the one died now i have one from russel performance but its the same thing, could it be that i have some leaks up the lines? My car drive good without any problems, just wanna fix that

Thx Peter

http://www.youtube.com/watch?v=xAofJ...ature=youtu.be