MOTM

What do you folks do for power cables inside your MOTM systems? The 
power cables that come with the kits seem to be a bit on the short 
side.  Is it correct to assume that many of you have just ordered 
connector parts and built longer cables? 

I have found that things pretty much don't reach if you are doing more 
than 2 rows of MOTM modules in a 19" rack.

Thanks

Bruce