Hi Rufus1980
I believe in some manuals is written something like "have the underside of the pin horizontal - then the built-in 'slope' is good - fun to play the pin". We may adjust "slightly steeper" - see here https://www.ipdb.org/showpic.pl?id=289&picno=12435 - https://www.ipdb.org/showpic.pl?id=935&picno=30386
A general rule is " kicking the ball upwards with the flipper-bats - the ball must get to the top of the playfield - https://www.ipdb.org/showpic.pl?id=1724&picno=18560 --- of course when there is a path / lane upwards like here on the left https://www.ipdb.org/showpic.pl?id=245&picno=19595 the ball shot "full power" shall not only come up - it also shall roll rightbound and be bounced leftbound. Greetings Rolf