Hi,   I purchased two of the Realtrack Arriva Trains Wales Class 143s (an absolute must when modelling south Wales / marches!), but I (foolishly) decided to fit the DCC myself.   The DCC 8-pin socket is in the dummy car; I have found out how to remove the bodyshell (clips each bodyside, similar to Hornby class 60), but I can't for the life of me find out how to remove the seating block!   There are 6 clips (3 each side) which are very tight, but even unfixing them (and using shivs to keep