Say i run an optimisation for the below:

Quote:
Stop = optimize(5,2,8) * ATR(6);


And then I run a backtest with Zorro using the .PAR file....

If I was then to change the
Quote:
ATR(6);
to say
Quote:
ATR(3);


And then backtest again and my results were better using the ATR(3); is it ok to do this or would you not recommend it? Would using the lesser time period for ATR also tighten up the stop?