Cannot remove excess notes from a bar

I tried the built in PDF Import feature and it did a pretty good job on a simple part, except it messed up a triplet starting on the 2nd 8th note. I figured out how to fix that with the quarter note> command 3, and just move the existing pitches (which were transcribed as quarters) into the 2nd and 3rd 8th note triplets of that beat. Easy enough. But now I'm stuck with 3 extra 8th notes in the bar and a grey-out + over the end of the bar. I know that bar has too many beats. But I cannot figure out how to get rid of those three extra 8th notes. It's in bar 19 of the attached file. Thanks for your help figuring this out. -mm