$16 for 8 if money is no object......
View attachment 1715768357
5/16-24 Stainless Steel Hollow Bolts with 1/4" hex drive (8 bolts) | eBay
What if you pressed in a brass tube and bent it as a squirter?
Or...drilled a jet i the back wall at a matching angle to hit the pump gear from the pressurized pocket instead of the uni-directional threaded hole with your aiming bolt? Just thinking inside the pocket on this.......