I replaced the original cast main spring on my Queen Anne with L&R’s updated forged spring and it made a big difference. I used to have to keep my flints super sharp for it to be reliable. I know flints should always be sharp but i have locks “Chambers” that seem to knap flints themselves.Thank you Kevin!
I think the lock could be faster. The main spring is very light (though the lock sparks pretty well). I think if I ask L&R they might send me a stiffer one. It's worth a try asking.