Hi Dave:
Welcome to the Forum.
If your heart is set on a lightweight 1.5 lbs. bag, then the Vision is wrong for you. Even worse than the heavier weight, you may well sleep cold in a bag that’s too big/long for you. Two options come to mind:
1. Return the bag and insist on a full refund — including your shipping cost.
2. Put the bag on Ebay and see if you can make a small profit (the Vision is a bit more expensive than the Wisp).
Why keep a bag that’s not the temp rating, weight or size that you really want? Keep looking – Mountainsmith, Mountain Hardwear, Western Mountaineering, Montbell, and others all have models that fit the above criteria.