I would go WOT when working with the springs. Yes there is silent ping (dont know too much about it tho). I would go lighter till you hear pinging at WOT then go back heavier till it just stops. Right now you have alot of wiggle room as you dont know how close you are to pinging & do check at WOT. You might be close & you might far away & actually be able to use much more advance (faster)

live every 24 hour block of time like it's your last day on earth