Wraggy, just to point out if you get some lead plate, you can see (kind of see bits off) I've got a square peice of the lead under the speedo and then a peice that totally fits in the servo bay.
The bit in the servo bay is only held in by the servo mounts (longer screws needed) so VERY easy to remove or change for a smaller peice. and is covered in black gaffa tape purely to make it look nicer. The peice under the speedo is not because my servo tape does not like to stick to the tape so it's stuck straight to the lead.
Not sure how thick the lead is but it's normal roofing lead I think, cut up with scissors.
