hello, i've just purchased a u89 serial number 60332 and it seems to be a bit of an oddity. this particular mic only has 3 patterns (cardiod, omni, figure 8) and not the 5 that the new models have. i'm curious to know whether this might be an older version of the 89. or maybe it has been modified before i got it. any information about this mic that anyone could give me would be much appreciated. thanks, john