I used 24 50 ql jars and varying olive oil and needle ql and came to the following conclusions:
*Unfinished compasses come out at different weights.*Olive oil affect the initial creation percent as well as the unfinished compass ql.*An unfinished compass will never come out more than double the ql of the olive oiland never higher than the jar ql.*Adding a needle will add a random amount of needle ql to the compass.
So it seems that olive oil and jar ql has the biggest impact on creating a compass. However, I did have a compass just 20 ql from adding a 68ql needle so having all components be high ql is important.