Reply to Weird Traktor Mapping Bug?

Can anyone reproduce this? I'm having a weird problem. I'm trying to set up several effects parameters with a single button so that I can control the Filter-92 with some knobs on my Evo 5. In order for this to work I need two buttons with identical mappings, one mapped to FX unit 3, and the other for FX unit 4 (FX unit 3 turns on the filter controls for Deck A, and unit 4 on Deck B). I want the button to set everything up but not make any sound changes; those I will control with knobs. So I want the button to do all of the following:

• Turn on FX unit 3 (or 4) for the relevant deck
• Turn on the effect
• Set FX Parameter 1 to 0 (This is the HP filter; this turns it all the way off so I don't interrupt the music by pushing the button)
• Set FX Parameter 2 to 1.000 (this turns resonance all the way up)
• Set FX Parameter 3 to 1.000 (again this turns off the LP filter so I don't screw up the playing track by pushing the button).

Now here's the weirdness: this works fine on FX unit 3, but with the same settings on another button for FX unit 4 (and deck B), the button works fine except for the LP filter (FX parameter 3), which it turns to 1.0 for a split second and then jumps back to 0.

There's a workaround - I set it to 0.990 instead of 1 and it works fine - it sets it to .99 and there is no change in the music or the setting because the resolution is such that .99 and 1 are functionally the same. OK fine. But what's weird is if I apply the same setting to FX unit 3 (setting it to .99 instead of 1.0) I get the same problem I had setting FX unit 4 to 1.0 -- the thing turns all the way up for a split second and then jumps back to 0!

The fix is to have one set to .99 and the other set to 1.0 but this seems bizarre; this can't be expected behavior, can it?

Am I missing something stupid here? Thanks!