I haven't been able to hear Windy on either the KFS SDR, or the Kiwi SDR in Pahrump, NV. I can usually hear it in the daytime on both of those. Glad to hear it is still alive and kicking.
Yes, I can hear a single L being sent on about 4096.1 on the KFS SDR at about 2200 utc, buried underneath what sounds like a relatively continuous tone. 4096 is a commonly used crystal frequency, so I suppose it's not surprising to hear a signal there. The L is sent about once every 7 seconds, and at a rough guess, I'd say the speed is about 6 - 7 wpm.