I have seen a few posts about some things not connecting properly but thought id do a comprehensive test of all orientations so you can see what sides are broken and perhaps prevent the issue in the future.

http://i.imgur.com/4tweGDu.png Bottom/West attached Timers

http://i.imgur.com/iNkixOL.png Top/East attached Timers

http://i.imgur.com/0uCnhov.png South attached Timers
http://i.imgur.com/JjEnYlq.png North attached Timers

Should now be fixed (as of c5bdf7c )