You don't have to worry about the warning. The table does not actually contain any rows that are wider than allowed. The warning is just saying that the table definition contains some variable-length columns that can't all be filled to their full length with data. As a very simplified example, if the page size is 2k, you can create a table with 5 varchar(1024) columns, but you are still limited to 2k of data distributed across the 5 columns - you could have 2 at 1024 bytes, of 4 at 512, or 1 with 1024 and 4 with 205 bytes each. (real values are somewhat smaller due to overhead on the page, but that is the general idea.). If you try to insert more data than the row can really hold, you will get an actual error and the insert will fail and roll back.
-bret