Here is the standard reed and cage
I fitted boyessen 2 stage reeds to mine
Here is the standard inlet manifold
Lots of people are led (wrongly) down the path of chopping off all the rubber moulding that enters the reed cage, myself I just chopped some off and left some on as it is used to direct the fuel air cleanly to the reeds...this is what I did
as for main jet...it would be wise to jet 10 points higher, for example from 240 to 250