So I tried pulling up the pin ever so slightly, but it didn't look like anything was happening. So I pulled a tad harder and the entire pin popped right out of the battery. lol. Guess that was too hard. There was a wire attached to it that didn't seem to mind my faux pas so I just reinserted the pin. I also used an emery board to file down the plastic on the charger. The battery seems to be taking a charge perfectly now.
Meanwhile, back at the camp, I go digging through my stash of supplies and I discover a couple of whistle tip carts that I think might work with this. I'm not even sure where these things came from. I've never owned an 801....All my previous gear was 510s. I'm thinking maybe they fit an old eGo mega atty or something. Whatever, I cut them down a bit so they aren't too long. They fit pretty well. They are snug and won't fall off, but there's a bit of a gap on the sides where the cart has a couple of indentations which allows too much air through. So I take a tiny plastic band I used to use to color code my cartos and slip it over the cart so it rests right on top of the go-go carto. Voila! I now have the perfect tip for my go-go which will also allow me to keep track of the flavors I have in them.
I'm thinking this is going to work out pretty well for me. I will say I've tried both the regular cartos and the 2.0 lr ones and the lr are much more to my liking with my favorite juice. I will probably try using the regular ones on juices I find to have too strong of a flavor since they seem to mute the flavors somewhat.