Only added after reading the first page, but now read it all
Frank brings up an interesting point....
If the big ends failed, would a crank regrind and oversize shells be illegal?? The rules, if followed to the letter, would indicate so. Surely common sense would prevail??
There's a distinct line between balancing and lightening.
I think the point made about "good practice" in building a good motor is well made. There's no performance benefit and policing it is nigh impossible.