Stuck keys SN

If you have a XO with keys that are sticking please add your serial number here: Please don't delete the pre statements so the wiki keeps the per line formatting. Thanks. --Richard

CSN75000512  occasional CTRL key
CSN74900A9F CTRL key, keyboard membrane torn
CSN75001D7D L-ALT key, CTRL key, keyboard membrane torn - paul@mawsonlakes.org
CSN74903405 CTRL key
CSN74803B7F left alt and ctrl key
CSN7480115D left alt key
CSN74902FB2 left alt key, alt.gr key