I just Purchased a pair of Polk SRS 2.3TL with a Nakamichi pa-5II amp off of Craigs List for $400.00. The speaks are a bit rough but not bad. 3 of the binding posts have been broken off and need to be replaced. I removed one and it has a 8-32 thread on it. I would like to find a replacement with the same thread so I don't have to break the seal on the mount plate. Will Rat Shack posts work? I also didn't know about the common ground but I did check the amp and it reads 0 ohms between the left and right speaker grounds. There was no interconnect cable with them and did not know about it until I read the instruction plate on the back. Auto connectors won't fit the slot or hole on the plate. Is there a special size that I need? And one more item is that the previous owner managed to put the grills on upside down and pushed in the bottom tweeters on both speakers but they still appear to work. Can the voice coil assembly be replaced or does the entire unit have to be replaced? Thanks for any info!