This is the very reason I only use a wide striped fabric in sashing or borders. I get very frustrated with stripes---mostly because mine end up crooked and that makes me crazier than not matching up!!
The fact that you have all of your stripes going in the same direction in the same areas of your block make your stripes just fine. I would not sweat the fact that they do not line up exactly---like Prism said---it gives your block "life". And I agree with Madquilter---to fussy cut would be a waste of time and fabric.
I love your fabrics and your block---please show us more when you get more finished!!