I had a large GFCI plug on my hottub. Over time, the weight of it caused it to sag, short and die. I decided to replace the plug with a 20 amp plug and replace the recepticle with a 20 GFCI outlet. As long as only the line is connected (there is a 20 amp GFCI in the garage that is the first in the chain) it works fine. As soon as I connect the load wires (2 bathroom counter outlets in 2 bathrooms - 4 outlets total) it trips. I doublechecked the wiring in all the outlets. Nothing is wired wrong and the ground is not touching neutral. Got any ideas?