I assumed the 801 is that long precisely to accomodate that larger cartridge capacity.
In that case it can be shorter when you only use the mouthpiece and drip
Make it 2/3 shorter and create a mouthpiece that fits and one can drip in easy without taking it off. I am lazy and in terms of size, length etc when it comes down to
vaping it should be sized to it's bare limits, taking away all useless parts
Ps: just did it with one: 3/4 gone and use as tip a silicone top from a cartomizer were I placed a hole in. That way I can drip
through the mouthpiece.. ;-) The draw is very nice and strong, taste is also fine and
vape is very strong.
The original mouthpiece when dripping is not so great anyway, it tend to get loose over time because of removing it often when dripping