Hopefully this information doesn't find you too late. Sorry for not knowing the official names of the bolt assembly components. If you have questions, message me and we will talk.
There is a gap between the chromed section of the bolt and the rear of the bolt. This gap should be adjusted to the thickness of a business card.
Screwing the hammer/firing pin inward decreases this gap, screwing it outward increases the gap. Back off the small set screw that keeps the hammer/firing pin in place and adjust as necessary.
A rule of thumb I use is adjusting the hammer/firing pin until it is recessed 1/8" in the bolt assembly. With these adjustments the only misfire I have every experienced was due to a bad 209 primer.