I tried but there is still clipping. Not sure what this could be… 
I also have the feeling that the pitch is a bit too high in general. If I adjust the pitch pot, it quickly climbs to high frequencies. It feels like a log-pot would fit better, but no idea. I’ll check out some demo videos to compare the sound.
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OK, so compared to the video below, mine sounds much higher 
The current will swing from 0 to 500 microamps, corresponding to an audio range of 10Hz to 5200Hz, perfect for drum work. (Bass++ Drum Voice)
So yes, it should go pretty high but also very low. The parts list specifies audio pots for the shell and impact volume only, and linear for the others. But it seems like a log pot for pitch might be worth a try. Make sure the sweep pot’s turned down.
Also affecting the pitch are C2 (4.7 nF connected to LM13700 pin 5) and R19 and R6 (20k and 2k connected to pin 4) so check those.
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Trying to catch up with the discussion. Are there any Kosmo PCB/panels gerber files for BD++?
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I don’t know of any… I did some KiCad work on it some time ago but it’s unfinished.
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According to the Thomas henry site , the drum ++ runs on ±15v . but it has a eurorack power connector , will it work on ±12v ?
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It will. I use this with a 12V PSU and works perfectly.
Juanito Moore made a euro one. Wouldnt be too much of a task to make it into a kosmo module.
I’ve made up a 2 PCB version of JM’s module that would probably be easier to Kosmo-up but i boobed and ALL the pots are bloody backwards.