b-u ..,as an old one time rigger/tinbasher,I think you might `consider` doing the bashing when the head/g-box are off,and the top deck is cleared.... as the area at the back of the `cockpit is `busy` with control rods,pipes,etc
as it`s been bashed/slashed,it needs `rigging `properly,otherwise the panels may not fit.........only a suggestion,DaveB might concur....or not!