Ok so slightly filing the T on the Bosch or sears blade (both sides) will allow the blade holder to fully clamp into position. The Ryobi site told me in my inquiry about this issue that a partial clamp on the Bosch or Sears blade is adequate, However since I cannot visualize how this actually clamps the blade in place instead of fully closing as on the supplied Ryobi blade I question that in hard use that the blade holder may become compromised as it is constructed out of some type of plastic. You would think that Ryobi would slightly redesign the blade holder to accept the more prevalent blades that are on the market. I ran into a similar type issue when I purchased a new ryobi drill that has an led work light, which is a great idea, however it does not come on until the drill is actually moving which renders it virtually useless. Now I will say that the cordless sabre saw in question (p523) is a really nice unit with tons of power and speed and other features. Just wish the blades fit. I also have not been able to find Ryobi blades for sale at anything other than ridiculous prices.
