Sounds good, thanks. This mod is turning out to be a huge pain in the !!!!. The cap threads are different for some reason. Bike totally apart at the dealer costing me $$. Having to get the threads re-turned locally.
The threads on one of my Matris caps had a small defect/ding that prevented me from fully installing it. After I identified the issue (not obvious) and applied a small amount of lube it all went together nicely by hand. Matris uses very hard aluminium and anodizing! Your problem might well be something different, because I do recall another report of someone from down under that needed to have some sort of machining performed. It'll be worth it in the end when your handling is transformed....
BK