Hey tdogshookem,
I used KF to redeem LH F in July this year. Cost was 122,500 one-way HKG-FRA on the 747-8i.
LH only release F availability to KF (or any *A partner) 14 days out maximum, although it could be 11 days, 7 days... it changes depending on route, day of the week and loadings.
Also don't count on any seats being released, as sometimes (especially ex-SIN) they might go a month without releasing a single LH F award seat to *A partners. You'll have more luck ex-HKG, HND and PEK. PVG is harder.
For what it's worth, the experience was absolutely excellent and I am an LH F convert as a result. I'd take it over SQ Suites (which I have flown in on at least 20 sectors).
I've purchased revenue tickets SIN-FRA-SIN in F on their A380 for our Christmas holidays as I want to show my other half.
I used the ANA tool to find award availability. For me it's always been accurate, I then call the KF call centre to book.
LX F is not available to *A partners. Only Miles & More members with status of SEN (*G) or above can book LX F award flights. J (or C as they call it), however, is available.
Hope this helps. I have been doing a LOT of research into LH F, both buying (which is difficult from Australia if you want to fly F all the way to Europe) and booking awards... so feel free to PM me if you have anymore questions.