sell the crappy piece o sh*t ...errr...I mean tlm103 and check some other vocal-mics!!
you liked the SM58 on your voice?? nothing wrong with that!!
be sure to try a SM7 or an EV RE20, if you can somehow afford it, check the Peluso Mic´s (2247LE, P12) or other contenders in that range (Pearlmann, AT4060, MicrotechGefell)
most of them are much better than any TLM-series mic.
I know there are different opinions, but I never liked a TLM I tried and other´s seem to agree