My 8-year old son received a mePed v2 (full kit) as a gift and we just built it on one of the recent snowy afternoons in Seattle (one can only sled down a hill so many times and build so many snowpeople

However, we found that one of the servos in our kit seems to be ... broken. On power-up, it rotates fully in one direction, and doesn't respond to any commands (e.g., zeroing out). We've tried plugging other servos into the same servo slot, as well as plugging the bad servo into other servo slots. Same outcome.
@spierce are there any further diagnostic steps that you would recommend/request? If not, what should we do about a bad servo? Is this something where you would send us a replacement? If not, would you help me source a replacement?
Thanks for any help you can lend.
– Emmanuel Gomez