Put the interior aside as i was going cross eyed!!
After removal of the first little 'spar' thingy (no idea what they are or what they called, so if someone would be so kind as to fill me in) I was begining to regret deciding to remove them... however there was no going back so I persevered and in the end it turned out ok!
Not meaning to blow my own trumpet Pete, but I did this model for my first GB. Here's the link and what you are replacing are the control rods which look pretty damn good.