Hi all
I took the plunge and picked up a flask today. Now that I'm home and have built my coil etc, my kayfun won't fit into the thread?
This is as far as it goes, screws in about 1 rotation then totally stuck:
and also I noticed a lot of pictures of the flask have the 4 air grooves:
whereas mine has one:
I don't know whether to try to force it to screw in or not :/
I took the plunge and picked up a flask today. Now that I'm home and have built my coil etc, my kayfun won't fit into the thread?
This is as far as it goes, screws in about 1 rotation then totally stuck:

and also I noticed a lot of pictures of the flask have the 4 air grooves:

whereas mine has one:

I don't know whether to try to force it to screw in or not :/
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