What is a good option for a more maintenance-free vape with the Riva 901? I'm using the LR atty and it's great, but I'm either adding 4 or 5 drops every 5 mins or I'm adding 8 or so to a cartridge every 5 to 10 mins. There must be a better way; I'd prefer not to have any huge, gaudy mods hanging on my e-cig like a tank but I may consider. What would you veterans do?