Possible Clues:

• Sprinkle talc and rub in - it has a smoothing effect
• At last I am unable to make things go smoothly
• Oil, e.g.
• Setter's unable to bear hints of lactose used by restaurants as sweetener
• Missing lord keeping some British model smoother
• E.g. oil
• Vigorously rub in talc, overcoming friction
• I can¿t follow Luxembourg and Brazil to keep things moving
• Oil, e.g
• Oil from car, until changed, black inside