@carlsbad2, Hey Jerry, thanks for the generous offer. I have a lot of experience designing and modifying XOs. Have been doing this for what seems like forever and have a speaker design of mine about to go into production. The person who asked me to design him a small bookshelf speaker was a customer of mine and now has a retail outlet. He has the prototype but seems to have a problem finding someone to build a good quality veneered box.
After designing the XO I spent some considerable time choosing components and it was then that I settled on the Powertron resistor. Reverting back to Mills, paralleled Kiwame, Mundorf and some others was a big disappointment. I did not have a chance to try Duelund nor Path resistors as it was at this time that I was preparing to leave South Africa to move overseas.