Analogue-sequencer

hiya all,

i'm trying to get familiar with my new p3 but i'm a bit confused 
setting the tempo of a bank to less than 120 bpm by the bank initial 
tempo option (page 6, f3). changing to a tempo of less than 120 bpm 
needs to do adjustments in 2-bpm-steps/even numbers only - e.g. setting 
a default bank tempo of 105 bpm doesn't work - the choice is 104 or 
106 ... unfortunately the manual doesn't seem to give further 
explanations about ... it might be a feature to avoid boring slow 
rythms ...?!

... thnx in advance for any advice