I did mine differently to DCM.
I used these:
http://www.modelfixings.co.uk/high_t...steel_caps.htm in the M3 30mm size but they only have a 20mm thread so I used them through the tower with some spacers I had lying around (HPI purple ones), then the normal mounting hardware and then then nut (if that makes sense). There is about 5mm thread poking out the end on mine so a 25mm screw will be fine but I like to have the security of some extra thread sticking out of the nut (old habits die hard eh Steve
)
DCM has probably done a better job so may go over to his way (seems similar to how the rear shock on my XXX-CR mount).
I'll get a picture on Sunday and pop it onto the thread.
Ian