I decided to keep them because I intend to drive this thing everyday, and the increased vibrations would probably get old. I have stiffer drivetrain mounts also, so that isn't helping. I have also never really seen an enthusiast owned (aka well maintained) motor have a balance shaft issue. I have them in my current motor and have consistently revved to 7200 rpm with no issues. That particular set of balance shafts has 152k miles on it at this point.
I will also be using the updated oil pickup that has an alternate suction tube on the side. In the event the strainer becomes clogged, this tube opens to prevent a loss of oil pressure and can save the motor. I think this may be an underlying root cause of a lot of balance shaft failures. Low oil pressure going to steel shafts spinning inside an aluminum casting is a good recipe for seizure.
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