I've just started putting together my first HT room. I bought my house several months ago and the previous owner had the room pre-wired by a local A/V retailer. Three coax cables were run from the front of the room to the back ceiling for the projector. However, the 3 coax cables are not identical. Two are identical and the third is physical larger diameter. Why would they do that? 1. Shouldn't all three component cables be identical? 2. Would I be better off pulling new cable with the connectors already installed, or is it easy enough to strip and install connectors myself without worrying about quality loss? My current plan is to mount my project (Sharp DT-400) from the ceiling and connect using component input. The current cable length is 25'. Suggestions?