I have a Marlin 336 that I've owned for a very long time - more than 30 years. Recently it won't go boom. If I re-cock the hammer and let the firing pin hit the primer 2 or 3 times then it'll fire. I reload and it's not an ammo problem, ammo goes off fine in other lever actions. Not sure what to replace, front or rear firing pin, or firing pin spring. Could replace everything but that's getting a little pricey, especially if it doesn't solve the problem. Also on the Numrich site there are a number of Marlin 336 models. Am I safe in assuming the bolts are the same for all.
Tried calling Marlin/Remington but the repair shop is closed and doesn't seem possible to even speak to a real person. Maybe all dead from Covid-19?