Does anyone have any other ideas of how to attach an after market SIDE LOAD EXTRA DEEP ABS DOOR STEP threshold. IT"S IMPOSSIBLE to align then attach the 6 supplied push on clips. I'm thinking of drilling holes into the new step then buy 60mm long blk dome head screws and screw these into the existing holes in the floor of the van which would be on show but I think would look OK. Unless anyone has any other ideas. Neil