RE: Dope and Fabric Finish
On my Spacewalker, I used Solartex. The weave was filled, in the same area as you have in primer, with epoxy finishing resin.
By spraying 3 color coats, using no primer, I found the weave to be nearly filled. In areas where the trim color was added, (3 more coats) the weave was completely filled.
You may find that Solartex will be an easer solution to your problem