HELP Paint reducing.

[The Chef]

Hi Pro painters.

How much do you reduce your opaque paint by? As I'm having trouble removing the last masked sections without lifting the previous paint.

The only thing that I can think of is that the paint is too think/heavy and wont tear as the mask comes away, it also makes the mask very difficult to remove and lifting the paint on fine areas.

The thickness/weight of the paint is the only thing that I can think of.