Oh God, I sympathise. My Candoia babies (born at 30cm/10 gms) did the same thing. Amazing the tiny gaps they can squeeze through. ALL mine climbed... found them on curtain rails and high window bars.
You may be right about the heat from the cabling, but I also wonder if it's just the perfect size for them to hold onto securely. Maybe you could form a "Trap" by hanging some cable shaded by cloth or something in a place you can access more easily?
Another idea I have heard from other keepers is to put down a water bowl and sprinkle flour on the surface around it so that they would make trails as they crossed.
Good luck - we found ours over a week of searching - and only lost one permanently. My fingers are crossed for you.

For the record, I was total kidding when I joked about dozens of escapees a few months back. Wow. Good luck nabbing them all!
I suppose that you have found the all less competent hiders, and the ones remaining will be those in the most difficult places. At least you have last year's experience to lean on - and, as you have already said, they can still go a LONG time without eating, so I'd think you have several weeks to go where you may well continue to come across them.
There was an interesting idea in another thread about setting up a video camera to see if they are coming and going from particular locations - a Go Pro set on automatic timer might work if you get to that point.
I'm sensing darkness….heights…cords…and that pumpkin spice lattes may return to Starbucks. Please insert $1.99 per minute to continue.Do you know where any of them are hiding?
I'm sensing darkness….heights…cords…and that pumpkin spice lattes may return to Starbucks. Please insert $1.99 per minute to continue.
At this point, I'm putting all my hope in them getting hungry in a week or two and finding them as they try to infiltrate the gecko cages.