The FW-05s doesn't use/need a collet with the stock flywheel engine arangement. The flywheel will not accept a collet. Probably the cheapest way to do it would be to get a flywheel for an FW-05T. The one I have comes with a collet and washer. You should be able to use the rest of your clutch components with this.
Thanks for the information guys, I have looked up the fw05t flywheel set vs057 and am going to order it. From the pictures i've seen it should be the go, if not, well, I tried.
The LHStores here in Newcastle Nsw Australia didn't have much to offer in the flywheel range apart from 3 pin setups, but then I have to change the clutch etc.
The vs057 (current fw05t flywheel setup) was actually an option for the fw05-s when running an sg shaft type engine, looks to me that I should of got this from the start
PS just another noobie question, what's the difference between a pullstart flywheel and a non-pullstart one ?