My right scoop was firing SDTM. I tried adjusting the position of the scoop at the top of the VUK to point towards the side ball guide but that provided little improvement. The solenoid power adjustment didn’t help either.
I decided to bend the ball guide but didn't see any guidance how to do that so I thought I would post the method I used. The adjustment took all of 5 minutes.
If you remove the Jedi Training target that is just in front of the ball guide, you can gain access to the ball guide. Here you can see the ball guide with the target removed. Notice where the metal ball guide rests in relation to the black outline around the target opening.
Loosen the 2 nuts from below the playfield that hold the ball guide tight to the PF. You do not need to remove these nuts, just loosen the ball guide so it does not scrape the PF clear as you bent it. I placed some electrical tape on the face of the ball guide to protect the finish. Using an adjustable wrench, gently bend the end of the ball guide towards the center of the PF. It does not need to move much so go easy when bending.
In this picture, you can see exactly how far I moved mine. Basically from overlapping the target opening to just inside the edge of the opening. Reassemble and tighten the ball guide nuts. With my solenoid power at 64, the ball now hits the lane guide above the left flipper. Backed the power down to 25 and it hits the center or just above center every time! No more frustrating drains to end my multiball!