The oil control rings are not installed properly IMO. The original builder should make it right and if they don't there isn't a lot you can do. Sue them ?, you can if you want to spend $20K to get $10K back. Just tell everyone you talk to about what happened and move on. Their reputation will suffer and a lot of times that is way more important than the $. Hopefully they make it right and you are moving down the road :-).