It is not necessary to do any adjustments in order to bleed the clutch, especially with the latest v3.X versions. I've had two versions on my car and installed several for local forum members, and we never encountered any issues bleeding
That disclaimer is because very early versions of the RJM pedal had issues bleeding after adjustment. The pedal has been revised several times since, and the latest major revision was a complete overhaul. The install is far easier than ever before and there are no drawbacks like bleeding issues that previous versions had. I can promise you the upgrade is worth it
If you still have questions or concerns, I recommend you PM Ryan or post in his thread regarding this matter. He provides excellent customer service
RJM Clutch Pedal System for 370Z - Fully Customizable Clutch Feel & Stroke