Ender 3 Pro Y-Axis Linear Rail Adapters

Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4934434.

Print at 100% infill. You will want to install the stock bed carriage without the wheels on to these blocks. Keep all the bolts loose and then tighten them incrementally while sliding the bed fore and aft to ensure proper alignment and free motion.