The Timney doesn't use the original piano wire WOP/Reset spring. It uses a coil spring supplied with the trigger.
The reset/WOP spring has nothing to due with the safety engagement. Anytime the sear engagement is adjusted the safety must also be adjusted. As you increase/decrease the sear engagement the trigger moves (pivots) forward/back which changes the the safety engagement. In fact its the last adjustment made( step 3, fine tuning) after the sear engagement, over travel and WOP are set.
Bill
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