While I was replacing the water pump I decided to replace the timing chain guides, sprockets and chain since I had most of the stuff out of the way. I was putting in the last driver side upper guide pin with a hammer and small metal 1.5" dowel when the dowel jumped and fell into the distributor opening. I could hear the clink clink sound as it fell down behind the timing chain cover and most likely into the sump. idiot me had a rag in that opening for the last 3 days and decided to pull it to do some cleaning up. The manual was not clear to me as to the oil plumbing/flow but I think there is a pick up screen in the sump and I should be ok. My first thought is just leave it there as it will not get through the screen. Is there any reason to worry if the dowel is rolling around the sump or should I prioritize getting that thing outta there before I fire up the car?