I have an issue with one of the GFI circuits in my kitchen. One of the outlets with the GFCI built in went tripped. I reset it and was ok for a few days then tripped again. This time once reset, it tripped again w/i minutes. I replaced it. For less than a day it worked. I replaced it again, and once that 3rd unit was installed - Nothing (tripped)! This new outlet still worked when wired into a different circuit. This circuit runs a couple outlets on the back counter, the TV & Phone, and the under-counter plug strip on the island. I replaced every outlet and the plug strip in this circuit, then I put the GFCI back in - TRIPPED right away. I took the GFCI out and placed a NON-GFCI (regular) outlet. Everything runs fine. Whats UP? This is in the kitchen but NO part of this circuit is w/i 6-8 feet of any water. Why do all the GFCI's trip but nothing else? Can I leave the non-GFCI outlet in place? Thanks.