K2 - it sounds like you have one of the Verse boots. The colour would tell me which one: CF (blue), AF (grey), TF (black w/yellow) Basic (black w/red).
A few things come to mind:
1. The boot size is wrong for you (too big)
2. The CF and AF model have thermal liners, so they'll warm up, get softer, and pack out, the longer you stay in the boot.
3. The boot is designed for a very recreational skier. Adding aggressive activities, like jumping, is outside the performance envelope of the boot so the speed laces will loosen anyway.
Tightening is not unusual. Temperature changes thoughout the day, and season, have a large impact on fit as well. They're nice in the dead of winter, but murder in the spring and summer (glacier skiing).
Hope this helps.