A518 46RH rebuild

$400 for what turned out to be a core does seem steep to me.
Be sure to trade that converter for a fresh one. Id bet it's full of shavings, no way to get rid of those without tearing it apart
Considering I've got three cores (one 46RH, one 42 RH & one 42 RE) I paid $50 a piece for, yeah $400 is kinda steep...