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98% of Final probability?

10/18/1985 5:01:11 PM - Decoy (Generic Chaff Salvo [5x Cartridges]; Tech: N/A) from BEAST 11 is attempting to seduce sensor: SARH Seeker (Tech: Early 1960s)(Guiding weapon: SA-3b Goa [5V27, V-601P] #529). Final probability: 98%. Result: 37 - SUCCESS

10/18/1985 5:39:10 PM - Decoy (Generic Chaff Salvo [5x Cartridges]; Tech: N/A) from PROWL 52 is attempting to seduce sensor: SARH Seeker (Tech: Early 1960s)(Guiding weapon: SA-2d Guideline Mod 2 [S-75 Volga, 20D / V-755] #551). Final probability: 98%. Result: 13 - SUCCESS

Tweaked to 80% for the next update.

[1567.6] the chaff is still at 98% success rate against SA-2d and SA-3a

file attached

You are correct; we over-wrote the 80% "hardwire" tweak with a more nuanced implementation, and the 98% thing was restored in the process. Fixed for the next update.

The more-nuanced chaff implementation is probably worth going at length in a future article, but basically it takes into account the target's apparent radar size (reflectivity) when considering the chaff's effectiveness on a given radar seeker. So for example in a very large (RCS-wise) target the chaff becomes less effective at spoofing the missile, whereas with a very small or stealthy target the chaff will almost always be effective.