3 speed tranny's and ball bearings... NOT recommended?

[WhiteWolf McBride]

Guys:

I've been told that it is NOT recommended that you put ball bearings in the stock Tamiya three-speed tranny's. I scanned the forum, and could not find any evidence of this 'advice', and also scanned Tamiya's 3speed forum, and nada there either.

Am I being fed a load of crap? I'd appreciate it if Joe and Willy could chime in, as they are people I know, and I respect their advice. I will accept other veteran advice too... aka, from the Yahoo Group days.

If I've missed the 'thread' about this discussion, I'd appreciate a link to it.

Respectfully,
WhiteWolf