Bests & Worsts Reviews from Amazon

I just received my 40 foot Werner type 1A aluminum extension ladder (300 lb duty rating), and the Werner automatic ladder levelers. The ladder is great, but the ladder levelers are not what I expected. 1. First, and most importantly, the ladder needs to be modified (feet cut off & holes drilled into it) in order to install the levelers. This obviously permanently modifies the ladder, and does not allow you to convert the ladder back to its original configuration. 2. Second, the installation is rather involved, the measuring & drilling need to very precise, and the installation will take you a couple of hours to complete. This is much more time & effort than I had planned to modify the ladder. 3. Third, depending of the type of Werner ladder you have (aluminum 1500 series), the instructions mention that the working height of the ladder will be reduced by 7 inches. Not alot, but sometimes every inch counts! 4. Fourth, after opening the ladder leveler box, and reading the instructions, they said that I needed an additional kit to complete the installation on my aluminum extension ladder. I regularly remove, rebuild, and install automobile engines...as well as other complicated electrical, plumbing, and carpentry projects around the house...so I am very capable of installing the ladder levelers. I just feel that when I spend $79.99 for ladder levelers (a large percentage of the cost of the ladder itself) that these things should be easy to install, should not require permanent modification of the ladder, should not require me to purchase additional installation kits (different kits for different ladder types), and should not reduce the working height of the ladder. After reading the other reviews, I am sure that these levelers work great once installed...I just would have liked to have known about the items I mentioned above before purchasing them!