T-cut, what am I doing wrong???

[ItsTony]

Just a quick question. Bought some T-cut and tried t-cutting my van. The application is fine and its quite noticable the difference its made, but whenever I try buffing it off with another dry cloth, it doesnt seem to want to fully come off. There always seems to be some dried on marks that just dont want to come off.

What am I doing wrong???

(Thanx)

[ItsTony]

Thanx for the advice.

Just to add, this is not for my pride and joy. Just a works van that I'm planning on selling. The cars been repainted before in the previous company owners colours (black) so I was just going to give it a quick t-cut and wax so its looks better to any buyer. I tried some wax on a small area where the t-cut had come off clean and its made a big difference to the paint there.