So I have these scratches that you cant feel with the fingernail, here was my steps to remove:

1 - yellow pad - SIP
2 - orange pad - SIP
3 - white pad - PO106ff
after using this things look really good but I can still see some of the scratch left - so what is the next step to go deeper, what pad / polish shoud I use - I'd like to keep Menzurna product.

 

just to be clear I cannot feel the scratch at all.

 

I'd suggest trying Menzerna Power Gloss as your next step along with a yellow pad or purple foamed wool pad. If you're using a PC, consider trying a smaller sized pad for even more cut and efficiency. It will break down polishes more effectively with a smaller pad. Here's a link to our PC 4" pad kit if interested.

Good luck removing that scratch! The next step beyond PG would be a light wet sand, followed by each of the polishes to remove the wet sanding marks. Also, make sure you're applying good amount of pressure, working the buffer at 1" per second and making roughly 6 - 8 passes over the scratch before removing the product.

George