Seized Compression Adjuster..

I've heard that they're prone to this and on deciding to take the settings to a reference point I find that the R/H leg has no movement. I could adjust the preload with it. At the moment I'm giving it a squit with WD40 when I park in the evening and try to ease it in the morning. Will this persistence pay off or will I have to resort to stripping it down somehow. Or once they're seized do you just bin and source a new one? (adjuster, not bike!)
On a side note I was surprised how quickly (in my terms) an '02 bike has slipped off the radar when it comes to factory parts. I've a Triumph dealer local but when I called for service parts they had nothing. Got my service kit from M&P in the end.