So it seems that the bushings are the cause of the sloppy wipers not returning correctly or just flopping around the windshield. The bushing should keep the 3/4" hole in the linkage arm from slipping down onto the 1/4" shaft causing the slapping action. I seem to have fixed this problem using a McMaster part number 9579K68, pack of 20 for $8.22 Nylon Double Snap-Grip Hose and Tube Clamp 5/8" to 21/32" Clamp Diameter Ring
Begin by remove the wiper motor and disconnect the linkage from the motor arm. I simply pulled it hard enough and it popped off. I then slipped the clamp over the ball and pressed it closed. put the bushing back throught the hole in the linkage "if it came off" and press the bushing back onto the ball. Its a little difficult to get the bushing back on but with a little force and some fancy finger work it was no problem. Now the linkage cant slip off the bushing onto the ball shaft. DONE! Its beel working fine for me and the wipers are mint again. I have not checked this fix for the middle linkage but mine seems fine without any more tinkering. Good luck!
Begin by remove the wiper motor and disconnect the linkage from the motor arm. I simply pulled it hard enough and it popped off. I then slipped the clamp over the ball and pressed it closed. put the bushing back throught the hole in the linkage "if it came off" and press the bushing back onto the ball. Its a little difficult to get the bushing back on but with a little force and some fancy finger work it was no problem. Now the linkage cant slip off the bushing onto the ball shaft. DONE! Its beel working fine for me and the wipers are mint again. I have not checked this fix for the middle linkage but mine seems fine without any more tinkering. Good luck!