Hi everyone! I've been lurking about the forum for several weeks now, reading new threads here and there as I setup my very first layout. As I've come up to some minor problems or things I didn't understand, the forums have pretty much answered what I needed to know. But now I'm stumped. So it all started with a gift in the form of a Kato ES44AC starter set... and of course this has exploded to setting up a new workbench, two additional Kato variation sets for a practice layout, an NCE powercab and second new locomotive. I installed a TCS decoder in the Kato GEVO, and I'm happy with the configuration - I basically setup CV2, CV6 and CV5 for great low-speed running and a top speed of 75 scale mph. No worries so far. The new locomotive, an Intermountain SD40-2w with ESU Sound Decoder was rather more complicated, but I did get it running great, and speed matched with the Kato after playing with the CV2, 5 and 6. However! the notching engine sounds are not synchonized with the speed steps of the locomotive. Press F8, and the prime mover starts and settles into idle. At step 1, the sd40 waits 4 seconds, and then starts inching forward... no change in sound. as I slowly increase speed steps.. the loco will increase speed, and notching changes are heard. However I reach notch 8 somewhere between steps 50 and 60. Until speed step 128, the loco increases speed until it reaches scale 75mph, but no more changes in sound. So the question.. how do I adjust it where notch 8 is reached in the upper-limits of the speed steps?