NO plug in mine either but thats normal for the cheaper picco range, once you go top end they come with a P5TH plug installed.....

I also find that each picco i have had that here in australia they always are lean at factory settings but on the other side of the world they are right on....

Funny thing but just what i have found with each on i have found....

I run a maxlife ally shoes with 2 x 1.0 and 1 x 1.1 mugen springs in my set ups