Problems with scope synth?smooth midi movement with bcf2000!

[the19thbear]

i asked this question before but never found the solution, so here i go again

i have the bcf2000 midi controller. If i assign it to control, lets say the filter cutoff of a scope synth, lets say i know 007, i get uneven movement response: the filter has an audible uneven filter sweep, ( it skips certain freq's, = if i move a fader up slowly, the cutt off should rise slowly analogieously with the fader, but it skips certain points in the movement..). I can cotrolle some scope synth fine, and all my vst synth perfectly, so the problem is within scope, or at least within most scope synths..
( there are a few synths that work fine, but most of them have this problem)

any solutions?

[the19thbear]

thanks!!!!! I allready have mod2, can you do it there? if yes=how?
or is flexor the only option?

thanks!!!!