If you change add the address 7C4005 in Cheat Engine then you change the last number in the value. (E.g -- 2299021707 --Change to -- 229902170 From my experience if you change more then the last number you will get DC/ed but I have also found out if you change the value back to what it was before you teleported undergound then you will not get Dc/ed and you can go back to playing.
So now when you and the enemy have the flag in WSG use this and TP underground to hide and once you get the flag back change the value back to what it was before and CAP IT!!!
I have also just found out it will not teleport you back to the same place if you are on an uneven surface. So try to chose some where flat.