OSx 10.6.8

Max 6.1.2

When I load Thesys (a VST MIDI sequencer) in a [vst~] the outlet for "plug-in generated MIDI events" provides pairs of 144 60 0 note off events, but no velocities greater than 0. It's similar with CC changes; 176 11 0.

Is the lack of (or zero-ing of) the final piece of MIDI data a bug in [vst~] or something with Thesys? When queried for paramnames etc the Thesys seems to play nicely with [vst~].