See a bootfitter if it conflicts with the boot tongue. Sometimes adjustments can be made to lower tongue height.
Was there a reason you got the OTS one instead of a custom one? I love my custom CTi2. Great fit and it has a special ACL retention device (extra cable that holds your lower leg from slipping forward). If insurance is paying, it shouldn't be much (if any) more to get a custom one vs. OTS.
I've had the most luck with CTi braces. Tried Breg and Donjoy and they just don't fit me as well. I've also started using the Asterisk ones because I didn't have insurance, needed a new brace and could get them at a discount. There are some cool things about the Asterisk (the tightening system is much better and the built-in knee pad is nice).