hi very interesting to say the least .
I may beable to help very familiar with efi setup .
also have dyno etc .
if ur local bloke carnt help give me a call 0402601359
im a vmx nut just like u .
ok its a plated cylinder i just read all of it lol
1200 wet and dry used with light machine oil will do the trick and try to make a 30 degree cross hatch patten what ever u do do not use a cylinder hone the stones are too short and fall into the ports the long type are around i imported one from the states but they are way too harsh even with fine stones and honing oil
