I don't want to hide information I just thought you should not go the learning path I already went.
The custom MW elements cost me 75 EUR/each and they work perfectly.
In my opinion the good governor operating range gets too narrow when you cut off fuel to let's say 80-100 ccm/1000revs using the 8mm elements.
This is the reason why I am not too much after quantity at all cost but a good relation of quantity within the original range of the governor.
Either the governor gets too sensitive or the car looses drive ability.
Getting 8mm for free and cheap bench access together with a bench freak, o.k. but not if you have to pay for.

Tom