Can't get my Squier P-Bass Special's neck relief right

[phxlbrmpf]

Well, my Squier wasn't exactly expensive and I realise its neck is pretty thin and maybe made out of crappy wood but it still kind of annoys me, whatever I set the truss rod to, I can't seem to get rid of the back bow.

So I was thinking, perhaps it's the strings I'm using? I like and use 045 - 105 standard gauge but maybe this is too much/not enough for the Squier's puny neck? Should I use heavier or lighter strings? Me no good at physics. Or maybe something completely different? Thanks a lot in advance.

[markdavid]

squier necks are made from maple like most basses , if the bass is within warranty then take it back and have the shop adjust it (if you bought it frm a shop) If not then take it to a good music shop to get the neck adjusted. If that does not help then it would be a good time to have a look at the squier vintage modified jazz bass which very good for the price