Thanks, nice reply, it helped me a lot. 
.. ( but still many questions)
.. ( but still many questions)
Yes, if you have perfect pich it (transposing) could be a problem. Can`t help becouse I haven`t that problemRowka said:I'm pretty messed up myself. When I'm figuring something out by ear or if I'm improvising I "see" the notes on the bass guitar (string and fret) then I have to determine what note it is (I know the notes of the fret board. Takes a fraction of a second to do, but I still have to do it i.e. if I'm on a D and I want an interval of a 6th, I instinctively know where to move, then that is, oh, a B), THEN I have to transpose it up a 2nd or down a min 3rd (if I'm on a tenor or an alto) by "seeing" that shift on the fretboard and playing THAT note on the sax.
Bass is my native music language.
It's like trying to learn to speak Spanish but still thinking in English.