Delta RepRap using both belts and Spectra fishing line

I have this new RepRap 3D printer that came to me half assembled, sans electronics. It had been running, but got pirated for parts to make another Prusa.
There is a lot more room on the smooth rods for it to get taller. I just need to make a belt stretcher (I am too cheap to buy longer belts).
I have some fishing line I picked up on clearance a few years ago – $6. It just so happens to be the 65lb Spectra line that people are using to string up their Kossels.
So I decided to use both. Belts for the drive and line for the ‘idler’ side.