He is a member here and possibly the most capable of repairing those issues. He is located in USA though and for you being in Bristol, UK that should not help...
Anyway.. here is the photo of the element:
And here is the thread that deals with it. It's Parat razor but has the same construction as your rocket:
Anatomy of a Rocket
Anyway.. here is the photo of the element:
And here is the thread that deals with it. It's Parat razor but has the same construction as your rocket:
Anatomy of a Rocket