Craig, The bike I had here......I did not install the kit from the start, it was done by someone else.........The bike had done less than 1000 km's from that installation. The extra area it needed a whisker off, see your pic above showing the red section with the 2-8-2 numbers.......the right side upper corner needed a bit cut off that upper corner, as when the cover was on, this corner sat very close to the starter drive chain. Personally, I would attempt to remove the starter and its transfer gears through the inner cover to see how it all seals before you fit the inner assembly.......Afterwards will be too late........I'm not sure how it is set up exactly with seals and/or sealant on these parts.......... On this bike I stopped the main leak from the gearbox main shaft, but it still weeps a small amount forward of this, and around where the starter mounts from behind........Obviously where the inner cover sits on the engine, this area must have sealant used to prevent leaks from there as per an original cover/joint. Might just be worth looking to see what is what.........I would be interested to know myself.........Cheers.