Quoted from Gov:Q2 - if the locks are lit (deadworld is spinning) it will always supersede the modes if you hit it 3 times. Seeing you have the deadworld mod, it will divert the three balls. Best time to do pursuit or manhunt is when the locks aren't lit. You can change the modes during play by using the left launch button. So, if the locks are lit you can cycle to modes to not include those two.
To add to this, because the locks are lit, you can only start the next link in the chain by hitting the sniper tower. Manhunt and Pursuit are the two ramp-based modes. As the rulesheet says, you should start Manhunt from the left ramp - http://www.ipdb.org/rulesheets/1322/judgedre.htm. And if you start pursuit while locks are lit, you'll take out half your chance of scoring it because of the diversion to Deadworld.
As for angle, I set mine using an inclinometer as specified in the manual to 6.5 degrees. Leveling app is fine if you don't have an inclinometer.
Other thing you should know about the sound ROMs running Deadworld:
http://pinside.com/pinball/forum/topic/tech-judge-dredd-sound-roms-l1-and-l3#post-994184
Lastly, if we told you where we get plastics it wouldn't be a secret any more would it?
Seriously, some are unobtanium, some you can get from Australia, some you have to buy used.
viperrwk