Jetstream sxr-80 to Zebra JK Spacer for Zebra G-450 and G-750

A simple spacer for using Jetstream sxr-80 refills in the Zebra G-450 and G-750.

You will need to wrap a piece of tape approximately 0.50mm away from where the translucent plastic and solid colour plastic meet on the SXR-80 refill to act as a spring stop. The spring should stretch out past the tip of the refill.