My advice : You will not show these item on your PI if you show 4 parts list items as follows.
1. Blade for TWH120
2. Plastic Belt-cover for TWH120
3.Hexagonal axis for TWH120(NEW)
4.Throttle cable for RL600 single drum roller.
On the Proforma Invoice you will lose Discrepancies.
But if you need to show these items on The Proforma Inv. We have no problem.