Built this kit years ago, not sure why it's taken this many years to "finish" it. All together but on TX it isn't stable. Tuning range is about 7.03 to 7.06, give or take a bit. Sidetone on TX is fine, at both 7.03 and 7.06. But if I listen on my big radio, at 7.03 the TX note is fine, but above 7.05 it gets this raspy note to it. Quick check into a dummy load shows the expected 2W, and it does seem to receive ok. [Been using a simple clip lead on the dummy load to "transmit" so that my station can hear it--doing that as a quick and dirty way to calibrate the dial.] Not sure if anyone else has encountered this? Where I built it, my first thought is bad solder joints, followed by improperly sanded magnet wire, followed by wrong component installed. But if someone else has had the same problem, and traced it to ___ then that'd be a big help! I plan to hit it with a scope and trace through the TX path, starting at the end to see what the rasp looks like, and also to look at the power supply, just to make sure it's not noise there (same supply that my big radios use but who knows, maybe I lost a cap on this SW40 and it's local noise).