I have read several posts concerning Williams drop target issues (was trying not to duplicate a post), but none have answered my questions completely. On my BK2K both sets of lower playfield drop targets work, but both are "sticky". They drop slowly about half way, then after a moment, or if hit again, they drop completely. I think they come back up OK. I know I will need to take the target assemblies out and clean them. They look like they have been "greased" (maybe lithium grease?) Should they be cleaned with alcohol, regreased and reassembled? Or should they be not greased and reassembled dry? Also the springs look to be in good shape, but I am assuming I would be wise to purchase new springs to alleviate unseen tension issues. Does this sound like a cleaning and reassemble will cure this, or should I be looking at anything else while I have them out? Thanks in advance.