In reply to JohnnyW:
If it's the same as the Spantiks you adjust the lace length w an overhand knot in the velcro tab so that when you pull it tight you can simply close it by velcroing, rather than retying every time. I don't think I cut it - just left the tail in the boot.
I had my inners thermoformed in the shop - made a big difference I think, as they didn't seem to fit when I tried them, but then neither did a size up or down. Put 'em in the oven in the shop, then back into them & they were pretty good. Pretty good shop (AMH in Anchorage) & a knowedgable boot-fitter who took 2 or 3 hours w me to get them right.
Damian