Assist saucer issues,
Mine was pretty much the same, pitch is @ 6.5 degrees & ball shoot was very weak.IMG_0315 (resized).JPGIMG_0316 (resized).JPGIMG_0317 (resized).JPG
The mech had been rebuilt with new coil sleeve etc, in the end I noticed the eject cam could have done with more adjustment pushing the ball harder out of the saucer.
Two vital parts that need to be new are the eject cam 7471-R & mounting bracket ass pivot 18146 & check your saucer eject shield that it hasn't broken off any of the two plastics lugs that position the ball.
I bent the coil stop bracket up wards bit by bit & checking by hand the plunger was still compressing & re bounding perfectly & make sure the plunger bottoms out on the coil stop & if you go to far the plunger won't bottom out, if you go that little bit to far up you'll notice the ball eject spring plate will touch or be very close to the saucer plastic, keep in mind the the whole mech still needs to work perfectly & cam shouldn't drag in the eject slot.
This is a drastic hack but I'm happy with the result, it still makes the shot tough because it doesn't shoot out really fast just enough to make it & you still need to time the shot.
Hope this helps