Liam Venter from Fast Bike Gear in NZ as written a supplementary installation manual for Ignitech ignitions, in which he recommends against resistor type plug caps. He's found them to have reliability issues as John alluded to a couple of posts back. He suggests copper core HT leads, non-resistor plug caps and resistor type plugs (NGK BR8ES for example).
BTW, you can source his manual here:
https://www.fastbikegear.co.nz/index.php?main_page=index&cPath=1636_1640
It's written in much better English then the version from Ignitech (That's not a criticism of Ignitech. They did a pretty good effort in a language that's foreign to them). Liam's version also contains a lot more detail and supplementary information about stuff like coil recommendations and dwell settings. It's well worth the minimal asking price ($13 at present).
