Guys, Help naman po...

Ang weird, i hand-applied this product to a scratch located on my right fender. after mawala yung scratch, i topped it off with a 100% carnuba na turtle wax. the surface looked nice and new again

But after a few days, i was in a parking lot sa mall na may indoor lighting, i saw circle traces of 3M Scratch Remover and parts of the scratch that i left out...

1. Bakit ganon? mali ba yung pag-apply ko ng SR? i followed the instructions written at the back of the bottle naman... Tips naman diyan... thanks! =)

2. Ano po yung iba pang mas maganda na SR that needs konting rubbing lang? for fine scratches lang naman... thanks! gusto ko na palitan eh! i tried turtle wax swirl and scratch remover, pero swirl lang nawala, nandun parin yung mga fine scratches...

3. Hesitant ako to use any rubbing compund kasi bago palang yung car, but i saw this product "turtle wax polishing compund and scratch remover" ok ba siya?

thanks for your replies! =)