Anyone ever 'widened' a slot in a chock?

[wnethercote]

I started off with Hamel chocks (well actually, after my first steel ones), which tended to be a bit 'wide' so I often built my runner bodies towards max tolerance on thickness.  Some years ago I bought a set of  German chocks from Northwind, which were tighter, but still wide enough for my fat runner bodies to fit.  Most recently I bought my first Struble Chocks, and they are either under or over the nominal inch by just 1/128 ... and some of my runners no longer fit.

I could throw the offending runner bodies on my belt sander, or even build some new ones, but has anyone ever milled the slot wider on a set of chocks?  I am inclined to say that it would be a bad idea, since the stress risers at the bottom of the cut might lead to cracking of the chock.

Thoughts?

[Geoff Sobering]

You might be able to avoid the stress risers by using a ball-end mill for the final pass. I'm not sure how large a radius you can tolerate; if it's too small then the required diameter bit might not be stiff enough.

[Bob Rast DN1313]

I know of several sailors who widen there chocks to accept max width runners also to get both chocks the same.
You need a goo machinist but can be done

[wnethercote]

Thank you both.  It sounds like an off-season project!