Greetings, I am new to the forum, but I have been scrolling for a couple of years. I primarily use Flying Dutchman (New Spiral) blades. they are a bit tricky to load until you get used to them. I always Loosely load into the top first, then as I start on the bottom I will undo the top, the reason for this is that it needs to be able to turn. after I get the bottom tight it is easy to do the top.. I don't know how else to explain, so if this makes no sense please ignore. I will also comment that while I do like some of Olson blades, there spirals are very difficult to control and do not cut nearly as clean compared to the ones I mention above. that's just been my experience.