First oil pen question [710pen]

[Max T]

I just got a 710pen, my first oil pen, for my birthday. I tried it out today with a bit of difficulty. How much oil am I supposed to put in it? 2nd, I noticed when I dropped the oil onto the heating element and took the first pull of that load, it would rise off the heating element and return to its origination consistency in a ring. (presumably due to airflow) Do I have to ALWAYS make sure to put it all next to/ under the heating element? (I noticed that it worked a little better that way)

Thanks

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