Glenn,

The FXCM demo doesn't expire, so long as you trade every few weeks. At least hasn't over the last year.

4hr is hard coded into the scripts so adjusting the bar slider does nothing, I think.

I'd like to be able to back test different time periods, but they seem to be hard coded too.

I'm also naturally suspicious of something new, but Zorro ticks all the boxes when it comes the addressing the limitations of MT4, so it is worth a decent test.