Leaking up the back

LuJackCity

I posted a few days ago about switching to cloth. I took the advice of getting a trial pack from a local store. So far things are going well, only a few problems. It seems like a few of the diaps have been leaking up ds back. The fbs and bg are the ones causing the issues.

I'm worried I'm not making them tight enough, I'm a little worried about making them to tight so I guess I may be messing up there. Also, with the one size where should the rise be hitting? 

Thanks for dealing with these newb questions you ladies just seem to have this stuff down to an art.