the 'problem' with the vanwurks ali strip is that it comes pre drilled with 3 holes - if you then drill thro' the floor and attach the strip with self tappers.................you find that they foul the lower roller guide on the sliding door - I drilled one hole and discovered this, the roller guide just snapped the screw off - as yet I haven't gone back to sorting it but I guess the answer is to either to use self tappers which are modified or to redrill the ali strip inboard of the sliding door lower channel, if there's room