Holes changes in shape after unfolding feature?

Dear all,

I am new user for SW, I have part in sheet metal and will do assembly on it

I want to place some bolts and nuts into the holes that i created in unfolded mode

But when I use mate for bolt face (cylinder face) pair with holes cylinder face, it does not want to mate.

It seems that all hole already change in shape and having deformation form slightly

Is there anyone can help? So I can still do mate in assembly

Thanks

Cahyoadi

SolidworksSheet Metal