@carlsbad2, nice looking XO you put together, congratulations. Are those Path resistors you have there and did you compare with any others? There is also what appears to be maybe a Mundorf resistor mounted on a heatsink. If so I think it is a Vishay device and adopted by Mundorf. I found the same thing under the brand Powertron and is cheaper. I find it clean, very dynamic and open and use it always with it's heatsink to avoid thermal compression. Also are those 2 caps next to the low frequency inductor Duelund bypass caps?
Regarding your choice of Duelund in cotton for internal wiring may I suggest you consider solid OCC copper in PTFE insulation instead. It's more expensive but in keeping with the other components you have in the XO. I normally remove any push on connectors and solder, vastly and consistently better. Solid core wire needs to be anchored close to the terminal to prevent fatigue. Do not twist + and - just keep about 1" spacing between. To take it up a level avoid using the speaker terminals as a connection. I do this on my speakers' and amplifier terminals. I bring the wires from XO outside the box and terminate with pure copper FUREZ spades. I use identical spades on the speaker cables also terminated with FUREZ spades and place them back to back into the terminals that now merely act as a clamp. Ideally removing those huge lumps of dubious quality binding posts, finding that a non-metallic way of clamping is better still.
Next step would be to have the XOs outside the box.