Hello WD Pro and All, OT;
Sometimes when the skewer threads and nut are virgin there might be some additional friction until after the first use ... then fastener should go on and off smoothly.
The use of Locktite 249 Quicktape threadlock tape or liquid Loctitie 242 is just to increase the friction a bit for more fastener security ..... it is a good product to use on other threaded fasteners on your bike.
Titanium is a very corrosion resistant material so I have not seen any cases of galling (and should not happen unless the threads have been physically damaged ... and I have not seen any of that case either).
"The corrosion resistance of titanium is well documented. A stable, substantially inert oxide film provides the material with outstanding resistance to corrosion in a wide range of aggressive media. Whenever fresh titanium is exposed to the atmosphere or to any environment containing oxygen, it immediately acquires a thin tenacious film of oxide. It is the presence of this surface film that confers on the material its excellent corrosion resistance. Provided that sufficient oxygen is present, the film is self healing and re-forms almost at once if mechanically damaged."
Please PM me if you have any other questions.
Cheers, Neal
+1 mph Faster