That's not possible unless you plan on bending your sail panel into the same shape as the bulging roof
The difference can be made up by adjusting the panel if the top isn't warped. Lotus denies this issue and said the tops don't warp but you can see in the poll that some cars really do suffer from this issue.
We plan on inserting the proper sized helicoils into the top to fasten it down. I'll have some pictures on Wednesday.