Heres one for you i've been scanning the site but haven't come across this one yet. Ok pretty simple been doing this for a while now.
Que for arena
Unequip your weapon
Equip some pos weapon
Apply the stone or oil while your good wep is in the bag
que into the match
Then equip your weapon. Thats it
Now you've applied what you could not to your weapon and joined the match.
I'm not looking for +rep or anything of that sort.
I just want to be involved in the community and work on things together.
BTW this may be patched soon.