Thats was my swashdrive from Paul - the stroke adjuster works very well and you can do all ... my only bad was that i get with the adjustable gen8 always some give - its never stays like a rock , so i have now the compact and its a dream to work . Its now my only rotary ( except sidewinders and a whip ) -all other is coils. With the weights you get more or less force , or more speed in the needle