Prior to my little epiphany, I was ready to scrap my front-end because I thought it might be to blame....It is not, but.... I am still left with the notion that I might not be qualified to write a front-end for something I am still wrestling myself. My goal was to make replacing the LPT/Mach3 with a GFlop and KMotionCNC "easy" for a Mach3/G540 user, but I am beginning to suspect that Tom was correct when he said, "There is no 'common solution' everyone has a unique set-up". I have about $50 worth of bits and ~$20 worth of stock to support his assertion, but I still "know" my steppers run MUCH better with the KFlop; I am just a bit unsure I want to incur the wrath of those who might use my front-end to destroy their tooling/stock while they go through the rest of their learning curve.