hey mate after you install it do this procedure: YouTube

then when its setup stick it into third gear and check that your slider is nicely engaged in the channel of the quickshift linkage. Better yet if you have a second person they can go from third to fourth while you watch to make sure that your slider isn't nearly popping out the end of the channel. If you see any dramas drop me a line and i'll tell you what bits you need to sort it if that's happening.