Okay - messed around with the Jetboil Zip again today. Very happy with a couple more mods.
New Lid: I like the Ziploc one mentioned in my last Zip post, but it doesn't lock. One of the things I like about the Jetboil is the compact all-in-one factor. This lid locks tight, weighs only 0.2 ounces. Perfect! Got it at Target, but you can buy single lids here: https://www.anchoronline.com/replacements/custard-cup-lid.html Should work with all of the 0.8 Jetboil pots, by the way.
Burner: I'm just not a fan of the stock Jetboil burner. I tried blending my Gnat with their system, but in the end think I found another way. The main problem was getting the burner at the right height. I also like the security of the Jetboil pot, but not necessarily the "lock" attachment. I solved both problems with a 1/2 hour and a dremel tool. I cut 3 slots that matched up with the Gnat arms. The burner now sits up in the base of the pot and the pot is super secure on the stove without having to "lock". Sweet!
Three interesting things about this setup:
1. As far as I know, this is the lightest Jetboil setup. It could be an ounce or so lighter with the titanium pot, but this setup is only 6.7 ounces complete. Not bad!
2. It's very efficient. I've only tested a few boils, but with the Gnat on a regular pot I routinely get 7-8 grams per pint. With Jetboil I routinely get 4-6 grams. This setup is getting 4-5 grams. There's nothing really magic about the burner on the Jetboil, so this makes sense that dialed down a regular burner would get great fuel efficiency.
3. This makes the Companion Cup a great buy. Assuming you already have a small canister stove, adding a Companion Cup and a few slots that match your stove arms and height, for less than $50 you could have a Jetboil setup that is not only simpler, but significantly lighter.
I definitely prefer the way this sits on the burner to the stock JetBoil setup. Solid, secure, but not "locked". One more tweak to come. I have an old Java Press neoprene cozy that fits perfect on the JetBoil pot. It's a bit too tall, so I'm going to cut it down. In the end I should have a full JetBoil setup - pot, stove, lid, and cozy for about 7 ounces.