You could probably just buy the torx screw set being sold by Benchmade. IIRC, it covers all the sizes from 7-10. According to the advertisement, it was made so that BM owners can customise the tightness of their BM's action, so I guess it's probably expected to cover everything that BM produces.
You can get it from most on-line shops, e.g. 1sks.com