Hello Adam,
For me is hard to understand what you want to do or at least I do not see your logic. You want to change the EAs you have already with Trailing SL, am I right? If you do, this will totally change your strategy backtest. As Andi said you can not make a conclusion from a couple of trades opened if it will be better with trailing or not.
What do you mean you have “bad” SL-TP?