So, my D1 is in great shape. It was fully rebuilt about 10 years ago, and I've been slowly sorting out any small issues as and when I can afford to.

Popped a new DC prop on the front (it has a 2-inch lift and I thought I'd treat it to what it ought to have). Popped a new wide angle prop on the back the other day, with a 4-bolt flange conversion as the doughnut was dead (again), and she drives real sweet when rolling. But now, slightly lumpy vibe on idle, and here's the real question... Vibrates like hell if I put the handbrake (park/e) on.

What gives?
 

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