No there really isn`t. When it shrank, it may not line up again. NO HEAT !i

I did a shrunken wrap one time and after removing it, it did not quite line up. If it did shrink a bit, before gluing, you should try what worked for me.

This is what I did.

I put the under lap end on dry with no glue and installed both lugs closest to it tightly. Then started the gluing after that point and little bit at a time pulled on it and lined it up as I went along pegging each lug hole with sharpened pencils. (that`s all I could find to work with but I think you get the idea I`m suggesting).

After drying, I removed the lugs and left the pegs then lifted both ends to glue. The lap was shorter but plenty enough.

Don`t try to do it all at once, use contact cement and you may see the drilled holes in the wrap warp a bit, work it slowly but evenly. The pegs still go in the warped holes.

Any previous splits or cracks .... and you`re done pulling, they`ll tear.

I did it alone, you may want to find an assistant. I`ve been using contact cement weekly for thirty years, it can be tricky alone.