The engine comes shimmed at .3 mm. This is for 16%, for 20% you could add .1mm but you won't notice the difference between 16 and 20%, only in your wallet.

The plug i always use in my eagle's is a 6 or 7 from grp. A 6 when it's below 15 degrees outside and a 7 anything higher. I stopped using the nova one's because last year they started to fail really quickly.

The first conrod i use for break in and the first time racing it, so that's about 2 liter during break in and then 1 liter on race tune. After that they can last between 7-10 liters depends how hard you run it.

Bearings is almost unpredictable how long they last, i've had bearings fail within 5 liters and i have had bearings outlasting the p/s set.

For the p/s set it depends how you run it in, which fuel u use, how hard you run it and your tuning skills.
For an a example, my racing engines(Black Eagle) will get a new p/s after 10-15 liters because then it starts losing power.
But the engines i use for training will last for about 30 liters.