I did mine verticle but basically just like this with a couple paper towels.
https://youtu.be/Wgw6MhO83Fg
Put the barrel in verticle, cleaned the dripping stuff and put on the barrel nut to hold in place for 24 hours.
https://youtu.be/Wgw6MhO83Fg
Put the barrel in verticle, cleaned the dripping stuff and put on the barrel nut to hold in place for 24 hours.

