1,15-1,25 range.It is worth the try.
If the water seems too hot still, then maybe the boiler is set to be hotter than necessary.
What is the boiler pressure?
i got it from here, so HX temperature would be ~94-95 for light roasted beans: http://coffeegeek.com/forums/espresso/machines/2272" onclick="window.open(this.href);return false;