My observation trading with thunderbird that the take profit set somehow will hit. how the system set tp I am not sure. what I did when the ea have open post more than 10 layers, I started to add manual lot size that able to increase the profit beyond what the EA has earned. When the position has recover 3 positions going profit. just start to add a manual lot and set tp the same as the EA. I normally set the lot size as same as the larget floating. If the largest float is USD13. i will set lot USD1.3 and set tp same as the EA. hope this helps to increase the profit of your trading.
Yesterday I manually add lot when the ea open more than 15 layers. I profited extra USD200 yesterday from this method.
I started with 1 account with capital USD200. for 2 weeks trading, I have now 2 accounts with USD500 capital (profit from trading) with the initial capital withdrawn.