Very nice mods.
I especially like the zipper idea, ingenious! Another possible savings would be to get rid of the metal zipper slider tab and just splice a piece of dynaglide in it's place. I have this on my Darien UL and haven't had a issue so far.
Formerly known as "Cranky Bear"....
"yesterday is history, tomorrow is a mystery, but today is a gift---thats why its called a present" - Master Oogway
It's always best if your an early riser!
I like hiking as it's like exercise!