Duke,
Metal spacers (of "any" kind) are a chargeable option...

OK Crew: Let's get down to brass tacks (or nickel silver)! We have 3 more options to play with and we need to build this knife from the hilt on back. Handle material and shaping is going to be critical, as is the choice of hardware. If we stay with brass we should be close, but alright on options. If we choose nickel silver...different story. Put on your thinking caps.
Thanks, Capt. Chris