I need to replace my wool pile fin weather stripping (example of: http://www.swisco.com/Gray-3-16/pd/Wool-Pile/58-021 ) on a few of my windows but the installation of the old is not as simple as some manufacturers have clips at the ends that are removed for easy strip handling. My end slots are blocked but YouTube has a video clip titled "Replacing Weatherstripping: Helpful video from Window Depot USA" for my type of replacement: http://www.youtube.com/watch?v=jI1nnAtm55c. However, the spline tool is not shown well when it's used & I can only assume that the tool is wide & concave: one edge appears to insert itself on the pile weatherstripping and the side rides on the frame of the window.

Has anyone actually done this repair using the above video technique?

Another technique shows drilling a hole in the strip channel but not keen at all on it.

Thank you