Mack,
Thanks so much for the break down.
I am stuck trying to get these parts in US or Canada, most of the stuff here is non-metric. If there happens to be readers of this thread from outside the UK like me, please let me know where I can pick up similar parts. Halfords will not ship across seas.
Here's the parts again:
Halfords Blanking Grommet 25mm (Code HFX321) £1.79
http://www.halfords....tegoryId_255229
Halfords Aerial Grommets 19, 22 and 24mm (Code HFX215) £1.79 (Only the 22mm is necessary)
http://www.halfords....tegoryId_255229
Granville Black Silicone Sealant 40g £4.99
http://www.halfords....catalogId=10151
