scaling or replacing SS4 Lines and line strings in ORD

I have copied an SS4 Topo drawing into an ORD Seed file from the state DOT.

The scale of cells and linestyles is now whacked.

I used replace cells to gradually replace all the cells with the cells from the new ORD cell library.

How do I go about replacing / modifying / scaling all the lines and line strings (linestyles) in the ORD drawing?

Why are all the lines and line strings suddenly acting differently in ORD than SS4?

Thanks