Gears & Axles - stock 10 bolt on the dyno?

I have a new moser 9" from Brutespeed,but I don't feel I should break in the gears on the dyno.should I have the ECU tuned to allow for gear break in at home before any dyno pulls?.would my GU5 with 10,XXX ,and a rear alum support cover handle some mellow dyno pulls?and is the stock drive shaft a diaster waiting to happen on the dyno? I would not lock up the converter or over rev it on the dyno.any ideas and input would be greatly appreciated.thanks.

You will be perfectly fine on the dyno. However, I believe the gear break in instructions say forward and reverse in the air for however many minutes and then take off. So you should be good either way. I would likely heat cycle the bearings a few times before beating the snot out of them. They are a little tight before they have worn in.