Hi everybody! I want to thank you all for your comments. I want to clarify some points and give a conclusion (at least for me, I would be thankful if you keep posting some advises).
My first thought of the bass is that is very different to the basses I've played, not in a bad way, just different, and I realized that the action after the 12th fret was not as I'd like, so first I checked the bridge and I lowered it as much as possible, it was much better, but I'm used to a
really low action, and I mean really low, but I thought that the action was at least fine, after that I started to play around with the bass and it was so funny, I really liked the sound, the aspect and the overall feeling, so I wanted to go further in this matter of the action, so I checked again the bridge, to see if I could do something else, I couldn't, then I checked the truss rod, and it was surprisingly straight, I put a capo on the first fret and tapped in the 13-15 fret, checked the action and I couldn't even insert a card in between the string and the fingerboard, so it was fine in my opinion, that's when I posted the thread.
I don't play professionally in a band, I don't get any money playing, and that's not my intention, I just play in my local church, and I know no one is going to notice the difference with this bass, but I do, and that is why I tried this setup by adding the shim, and I'm pretty happy with it, cuz I did it myself (I know it's not a big thing) and it really helped to set the action lower, I am Mexican and to be honest I don't know many words you post here
, and google translator doesn't do a good job, I'm probably going to change the cardboard in some months when I change the strings (thanks for the advise) and probably change some other settings until I feel that the bass is perfect, so I know that what I did is not the ideal, but I don't really care that much if it reduces 0.3ms the sustain and I didn't hear the tone changed, I appreciate your comments but that is not the direction I'm going to.
Now my conclusion.
This is my first Fender ever, and I think it's an awesome bass, I really wanted an Ernie Ball Musicman Sting Ray, but I wanted a brand new bass, here in México you can get it for $2,000, and I couldn't afford it, so I saw this bass in promotion ($1,450) online and I thought it was a really nice deal, so I got it, I never owned a Fender because every time I tried one in the stores, the action was terrible, it didn't matter if they were made in USA, Mexico, Japan, every one of them I felt awful the way they played, but I always kept wondering why people like them, even when I tried a Fender borrowed, I didn't like it, because I was used to a flatter fingerboard, the string separation was much bigger, and I didn't really liked them, but I can see that many bassist I know doesn't really care about the action, the feeling, the tone, they just play what they have to play (and I think that is a major problem with christians musicians, but that's other topic), now that i bought this bass I'm really in loved, I don't think is a better bass than the Warwick but it's just different, what I really love about Warwick and Ibanez is the wood, the style, the exotic woods they use are awesome, the Warwick is a tank, it has fallen, get hit, and it is just a tank, the paint has fallen, it has scratches, but I think it looks very cool and sound so good, but now I see that the slap in a Fender is more comfortable, this specific bass sounds between a Sting Ray and a Fender jazz, so I really love the tone, I think I'm going to buy another Fender in the future, but with a proper set up, I saw a mexican Duff Mckagan bass and I'm trying to get it, the only brand I've never played is a MusicMan but now with this bass I don't have any urgency to play one.
