Any way to improve my 4g signal?

[Serofred]

I have Fresh installed, and am in the Denver area. Been getting 4g for months in spots, now that it is official I get it more. Just not at home. I go outside, and get it. The kicker is, that when I was on stock rom, I got a weak 4g signal inside. Especially if I was by a window. I tried it today, cause my cable internet was out. I figured I could sit my phone on a window sill, then get 4g and have decent speeds. No bueno.

So I am wondering, should I switch back to stock? Is there another radio that would improve reception? Any thoughts would be appreciated.