Blank SI cartos - when to replace, refills last less then prefilled?

[dandirk]

So am in the common "discovery" phase... 2 week in and not a single smoke.

Have the Volt 78mm/808 system and have just started getting bottled juices and blank cartos (also trying clearos too).

When do you know a carto is bad? I have read that many can refill the same carto for a couple of weeks, just don't really know when to tell they are bad...

Been using the SI blanks, 5 different blanks/flavors for 1 week now.

I really have been rotating and messing with clearos, flavors over the week so I know this isn't scientific but it seems like my blanks don't last as long between refills as the prefilled ones do.

Last night I filled 4 cartos... 1 I was using last night and died this morning... the other three seemed to be done in less then a work day. Much more frequent then the prefills.

The only reasons I can think of are:

• Vapping more... I went from 1 prefilled carto to 2-3 a full morning to night day... This I read about and expected, I would guess I am at ~ 2.5ml a day now.
• My blanks need to be replaced... I get either a burnt or cottony flavor which usually means refill, but now much more frequently. Going through 6 in a week when I also was using a 1.6ml clearo seems like this should not be the case.
• I am not filling properly... I have tried both drip and condom/boot method, both seemed proper with minor slush at the top of the cart. I have noticed with the boot method that a new blank will take about 3/4 of the boot with eliq, a refill is about 1/2 or a little less (is this normal, SI video says 3/4 for a cart which looked new?).

Not a huge fan of the X2 clearo, muted taste just a bit and not as easy to transport... but if blanks degrade this fast, then I guess clearos are a better option.

Am I doing it wrong, improper expectations or just the way it is?

Thanks