Time to replace your linkage bearings? Don't want to spend a minimum of $40 on a bearing press? Just print 2 of these handles, pick up some 1/4"-20 nuts, a 1/4"-20 threaded rod, and select the appropriate press size from my library and print 2 of each(https://www.printables.com/model/643323-full-bearing-press-library) to make your own for about $6.
Assembly:
While printing the handles, pause the print before the last layer around the void for the 1/4' nut and insert both nuts into the handles. Resume the print and let it finish. I would recommend ironing the top surface to get a perfectly flat pressing surface. Next, print out the selected bearing sizes and then assemble everything as shown in the picture.
For all parts, I recommend a rigid material like PLA and a very high/solid infill to avoid deflection in the pieces.
The author marked this model as their own original creation.