Simple electrical question

my zxr has a seperate regulator and rectifier unlike most bikes. now i'm getting 11.1v off the regulator and 11.8v at the battery regardless of how fast the engines turning. i can't get any reading off the rectifier either voltage or amp but i get 2.8a off the regulator. now the question is: has the regulator, rectifier or alternator gone? it's £85 per part and £100 for a replacement alternator and a nightmare to replace as it's belt powered so wanna try and fix it without removing the alternator itself.

well its sounds like your rectifya has gone if ther no voltage across it dont quote me though you want to test the altinator when bikes off and on just put it between te 2 out puts when you rev bike in theory you should get more voltage and amps can you not get a haynes manual 4 it?