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You need to pull the belly pan down so you can access it. We usually pull it down far enough to get the exact location and then cut a "trap door" in the plastic so we can get to it without having to take the whole belly off. Not sure about rebuilding it........not that expensive and a new one has a warranty. Hope that proves helpful here. Please get back to me if you need more as all follow ups are included in our fee.
I don't have those so I will opt out of this and allow another tech to offer something who might have something for you.