Idle Speed Controller For S2 Neo Engine

[Paul SM]

I'm looking for an idle speed controller (I think that's what they're called) for the series 2 RB25 Neo engine in my 2000 Stagea RSFour S. All I actually need is the plastic idle speed adjusting screw but you can't get one of these except with a complete unit. If the adjusting screws weren't plastic there wouldn't be a problem! I think they are the same unit on the R34 GTT Neo engines. Hope someone has a discarded engine that can spare one. It's the cast alloy unit at the back of the cam covers.