Total noob here. I just replaced my strings on my first used bass (Squier P Bass Special) with standard Fender Strings and they don't sound great (do they break in and get better?) and even worse, I can't seem to tune them right with my tuner. I'm too new to tune it by ear, but I can tell it's off. I'm using a Matrix Sr-1000 tuner (also used) and now my E and A strings aren't registering right and the needle never stops jumping around. The D an G strings are are tuning correct, but sound out of tune when I play the same notes as I used to play with my old strings tuned up. The old strings, while totally thrashed, sounded decent and now the new strings don't have that thump and slight distortion that I like. Does this sound like intonation or bridge issues, pickups? One last thought, is it possible my Tuner is broken?Thanks for any help.