This is a follow up to a post that had died. I've got a 12v landscape lighting system with a 300 VA transformer and 14 lights. The light bulbs are generally 20 watt halogen but I also have two of the bigger bulbs on gate posts (same size that you would use for a desk lamp). Those bulbs are also 12v but are 50W bulbs. Problem I have is one section of spliced wires (connected by screw caps) really heats up and on occasion the lights in the strand, especially the 50 watt post lights, dim. Can the problem easily be corrected by replacing the bulbs with smaller more efficient wattage bulbs - especially the two post lights? Suggestions? Thx