I would like to know what is the best way to fix a wiring problem or even if it is a problem. I just brought a newer home built in 2008 located in TX. At my main breaker box I have a ground and Neutral bar. Some of the ground wires on the ground bar are doubling up. Also on my neutral bar some of the wire are also doubling up. 1. If I just leave it alone will it cause a problem? 2. Is there an easy fix, like pigtail with a wire nut to make one connection? 3. If not able to fix it correctly with a pigtail what is the correct way to fix it, and can it be done DIY. 4. I am not sure but is it ok to doubling up on the ground bar?