How to fix a broken bushing block

One of my R2's had a previously glued bushing block break again, a common problem. It is caused by the sleeve bearing constantly being driven back and forth against the plastic. These blocks will all fail eventually. I did an easy fix. I popped the two 6mm rods out of the plastic bearing holder. I then rotated the bearing holder up and using a #32 drill, I drilled a hole above the sleeve bearing at each corner. I used an18 mm button head ( it must be button head there is no clearance) in each hole with the nut facing in towards the center of the R2. This should be a permanent fix. One of the screws is 20mm so I added a washer which decreases needed clearance and will be replaced.

I know the picture is poor, but I put it right back printing. It took me two shots to figure the hole position.

When I have a chance after the 4th I will make a drill guide and post the stl.