Quoted from Loganpinball:
First, sorry for any issues. Yes you can bend them easily without worry. I would try the lower option first, but here is what I do on my end.
Take the rail off game first. Then you can do two things. If you have a vise you can put it in the vise just enough to hold in place on one end and take a pair of smooth needle nose or smooth pliers and twist as needed.
Or you might need to bend the upper ball guide the u bracket away from the rails just a little more. I would try this first..
After tweaking throw the ball up ramp by hand and watch the ball. You should see its traveling path and if you still need to tweak.
Perfect advice and recommendations!
Will follow your instructions.
And no apologies necessary. This is pinball. Things need to constantly be tweaked. Dialing in a machine is half the fun of owning it.