Thanks kurusu and all,
posting foto with open and close toggle,
it's actually not bad, though not perfect like on kurusu' pics, (those looks like brand new))
There is some visual effect that makes that not flush expression, but it's all straight when closed.
but technically is not absolutely flush, but this little deep is same along all length of leaf spring, I'd say almost perfectly flush in the middle.
I'll prepare and try to make new good photos.
So I'll go step by step to troubleshoot,
Right Side Opened click here
Right Side Closed toggle click here
Extractor from inside click here
Thanks
Mario