Hi Darren,
I've got a special fibreglass pen, I use for cleaning the pins on valves, which will be ideal for that job. I'll finish things off then with some Blue Horizon contact cleaner, and it'll be job done! :)
I wouldn't advise using Brasso, as it's liable to leave some residue on the pins, after cleaning, which is difficult to completely remove.
You should get yourself one of the fibreglass pens - they're very handy and do a great job:
http://www.ebay.co.uk/itm/FIBREGLASS...=item27bb510fb
:cool:
Marco.