The wj looks great, grands are my favorite as well! Also can't wait for the V8 swap in the JKUR:thumbup:
After building my zj and getting its suspension setup the one thing I wish I had considered more was weight. The weight of bumpers, spare tire, rocksliders, skid plates and spare parts/tools...
It usually works for me to hold the stub of brass in a set of soft jaws in a vice, then unthread the nozzle with a pliers. When you put the brass piece back in the gun find the correct size wrench to tighten it as that will mar it less than pliers.
I use the milescraft rip guide for my 7-1/4" fuel saw, it comes with a couple options and seems to work fine.
http://m.homedepot.com/p/Milescraft-1400-Saw-Guide-for-Circular-Saws-and-Jig-Saws-14000713/100507166