Jondog is right on however my FPR went cruddy but I didn't get the text book "drool" I got an uber rich bike that would die at idle like a flossed motor. I tried the test but for some reason couldn't get a drip. Replaced the FPR and had a perfectly running bike- best its ever been.
So with your symptoms I would do as mentioned and replace it whether you have a drip or not
2001 #62. Ohlins rear/valves, Micron high mount, HyperPro damper, SharkSkinz, Tyga billet triple clamp, Tyga Carbon Fiber fender and hugger, Ti bolt/custom subframe/alien motion 8 cell diet, 15/41 520, COP conv. PCIII, Venhill lines, modified air box, turn signals in headlights...<deep breath> ZG Touring windscreen, Tech G rear sets, CRF450 rear master w/HRC cover, Tokico 6 pots w/V-pads, CRG Bar end mirrors, PSR Shorty levers-use only clutch, wanna-be basic racer paint, Roman Gold PC wheels