The three images here are of the cradle. The top left shows the variable fillet used to get the result needed for the part. The right top image shows the starting block of the cradle I created after sketching a side view of the part. Finally below is the finished part in an illustrated view to show off each fillet and hole created.
Below is one of the bushing pieces in a wire-frame view to allow you to see the hidden oil grooves within the piece. It took some mirroring and playing around with this piece and it's dimensions to make it work, however, after I found out how to complete the first one the second bushing with different dimensions was fairly simple to complete.
The following picture shows the plunger, a simple piece with very simple dimensions to complete. It's really just a cylinder with a rounded type and a drilling in hole going part way through the entire part.