voltage dropping please help.

[SPL Blazer 10+ year member]

im not but i have electrical issues aswell would a second direct run of 0 gauge to the rear battery without a distro block in it help a decent amount??

From what you have in your sig, I'd say drop the cap and see if it helps, if not then feel free to put it back in, Either way, you should have a HO Alt. Adding a 2nd run of wire isn't going to make a noticeable difference.