I am simply going to ask if the condition of my GB Plugin for the Retrode looks warped to you.
http://sta.sh/01ds84587sp
As it seems to have a little groove in there..
Mine is the same way, it must be the it was made. Works fine.
Frankly, this is one of the more beautiful slots I have seen (they sometimes even break!). Those connectors seem completely incompatible with the (industry-standard) reflow soldering process. Nothing we could do about it; there is no alternative to either.