When I retract the slide on my P99 the 3/8 inch needed to put it from DA to SA trigger forward, it sticks, and the slide doesnt go forward unless I push it or shake the gun forward. If its done fast it doesnt stick but its hard to do that without ejecting the round in the chamber. Also it doesnt stick if I depress the rear of the extractor while retracting the slide leading me to think its extractor related. Does anyone elses P99 do this? Any suggestions?