Cost is the number one reason. I don't like external balance. If it's a stock build then you can leave it.
Even at that, if you are converting an external balance crank to internal balance the cost
I asked why because I dont see why it matters to you my stock build. Im simply asking about a run stand question. Not needing what I shouldve done or what you would build. ThanksIncluding ALL the other costs involved in a new build, I'd consider the cost to internal balance one an added bonus.