2023 update:
This has been my favorite chair since I completed it.  The original webbing did not hold-up for long, losing its elasticity.  I've since upgraded to Pirelli webbing, which is commonly found in chairs like these.  It's pricey, but it's much more substantial and will last a long time. 

Just goes to prove that saving money, doesn't necessarily save money.

If your first cut is too short... Take the second cut from the longer end... LBD