Doing some browsing on what little can be found on the Mk.XII and it seems the aircraft I'm portraying is based on the Mk.VIII fuselage, retractable tail wheel. The landing gear for the Mk.VIII had oleo scissors on either side of the landing gear depending on serial number. It seems mine is on the rear of the landing gear, being in the MB serials. Need to do a bit more checking before I remove the attachment lugs from the front