Lathe Cross Slide Problem

[EdK]

I got the plug made and want to make sure I'm headed in the right direction for this press fit.

Hole = .7375"
Plug = .7379-.7381"

Cross slide is cast iron.
Plug is 12L14.

The thickness of the cross slide at the hole is a bit less than .75".

Would putting the plug in the freezer for awhile shrink it enough to make it a bit easier to install or is the piece too small to gain any benefit by cooling it? I don't want to heat up the cross slide.

From what I could tell by using Mr Google, the .0004 to .0005" oversize of the plug is within the range for this situation. I'm just looking for a snug fit, it doesn't need to be super tight but it shouldn't be able to be moved just by hand strength alone.

Any thoughts before I butcher my cross slide?

Thanks,
Ed