I think that is just a standard v2 gearbox. It's a good list. I personally prefer plastic nozzles and i would make measure the existing nozzle to make sure they are the same. Onc3 you have a chrono get a base line of the range, grouping, rate of fire and power you are getting. Stick to changing one thing at a time then test again. Also do you have grease? You can be amazed at the increases you can get from just cleaning, greasing and shimming your gearbox .
Oh you also want to check how much play there is in your hop arm if its loose you can get inconsistent hop applied to the bb. That's sortable with shims.