Yeah.........I also run mixed springs/colors - red longer with a blue shorter spring on my Track 700's with my Swoard EC......but all blue springs on Track 425's with my Moss PQ60
But I still had to grind down the lower springs on both boot (435 and 700's) setups to get to my "comfort" zone and have had no problems
There is so much micro tuning for Alpine riding before your ever riding! ! On my boards I'm trying to keep track of angles, stance width, 3 F toe and 6 R heel lift, Gilmour bias, boot flex, boot rigidity,...now add BTS Man......any of those could be a really useful workshop at the non official ATC!!
I got my BTS working where I like it....but have no idea if it's ...correct! ......or how much more I could or should adjust it, and to what effect that adjustment would have on my carving!