Normally I just use a drift and tap them out a bit at a time. I have not seen that before. It does look like it would probably do the trick. I will speak with Zpower next week and try and get some feedback.
There is a tip for easier removal next time. Using a dremmel or something similar make 4 small grooves in the headstock to allow a bigger surface to get a drift onto the bearing seat when the bearings are in place.
I can supply these items from Zpower and I will get back to you about the prices.