Replying to 3 piece vs. plug

Hello ns, I started off this season with a new pair of boots. Dalbello KR 2's In the past 8-10 days of skiing I've been into the shop almost everyday with a variety of attemps at comfort. We've done everything from extensive punches in the ankle and forefoot to shims in the calve and padding in the toe. They're still incredibly tight around the ankle squeezing the achilles and they loosen up top so I can't get shin pressure. Not to mention they have a huge gap in the assymetrical intution liner.  The last pair of boots I had were lange rs 130s and they were the best boot i've ever had. 

Anyways, my question is whether there is some one out there like me who's only ever skied plug boots their whole life and then adventured to the three piece design to find it just hasn't worked for them.

I'm going in tomorrow morning with hopes that they'll give me a new boot as they have a guarantee.