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I'm really sorry about not getting on today; I suddenly found myself a lot busier than expected. Will try to find the time to trade as soon as possible. Again, my apologies for this.
I got lucky with mine, it went in on the first ball. But I would use bait on yanma, since it has a relatively high catch rate, and bait makes it less likely to flee but harder to catch. Other than that, you should just keep trying and hope it stays in eventually.
I'm sorry, I completely forgot to send you a VM when I finished breeding my parent. It's getting late, so would you mind trading tomorrow? Also, I just caught my HP Grass shiny Raikou if your interested in that, I'm going to edit the details into my last post.