Hi Steve,
If you haven’t already i suggest you should read the FAQ thread in which i explain that:
• Tempest can only accept Midi CC messages on main MIDI channel as follows:
CC# 12 - Distortion
CC# 13 - Compression
CC# 19 - a value other than 0 reverts Beat FX params to defaults
CC# 20 - Beat FX All Osc Frequency
CC# 21 - Beat FX Feedback
CC# 22 - Beat FX Lowpass Filter Cutoff
CC# 23 - Beat FX Lowpass Filter Resonance
CC# 24 - Beat FX Lowpass Filter Audio Mod
CC# 25 - Beat FX Highpass Filter Cutoff
CC# 26 - Beat FX All Env Attack
CC# 27 - Beat FX All Env Decay
Tempest’s Midi implementation is not it’s strong point..