Hi Linheart,
3 to 5C, huh?
Well that is a particularly conservative number, but maybe TP are saying that so that people will actually limit themselves to 5~7C for breakin.
I know that the Pattern guys (the non-sponsored ones who do not abuse their equipment) figure 7C is a fine break-in for batteries that will be run at 17C at wide open throttle!
I think that the 7C average running we do in Stunt qualifies a fine break-in, so I wouldn't do anything to reduce the current, though I would limit the flights to shorter times (1/2?) so that no more than 50% of capacity is used.
This is especially true for those of you who will use more than the recommended 75% of capacity in order to use the next size smaller/lighter pack.
Hope that helps,
Dean