I will have with me at Kiddy some of the o rings mentioned in Paul's BJ4 long term review.
They are the Nor-Tech 'whities' and are low friction off road o rings. I've been running these for a while and I think they are really good. Paul also thinks so, and Elvo (set-up God and Belgium Nat champ

) liked them alot too when I sent him them to try.
Prices are:
£1.80 for 8
£3.40 for 16
£6.00 for 32
Cheers,
G
Now available from my online shop where you can pay via paypal
www.nortechracing.co.uk