Glad to hear you are happy with your Deck
Please email me your shipping info at firstname.lastname@example.org
and I will send you a few replacement rubber feet.
The cost to fabricate a 21 key numberpad would probably be astronomical in comparison to using something else off the shelf (yes I know blasphemy!) or upgrading to a Deck Legend.
If you are interested in modifying the lighting on your Deck (such as the caps lock) we do provide a schematic:http://www.deckkeyboards.com/documents/ ... ematic.pdf