Had a bad time with come water based dulux trade diamond eggshell a while back and have ended up buying it again because I saw this floetrol stuff that eliminates brush marks. I’ve diluted the paint 10% with the floetrol, mixed well and started painting with a wooster silver tip soft brush, and also a fox soft laying off brush in a bowl of clean water. Also tried adding a bit more floetrol, but that hasnt helped. it’s warm here, about 21c, there’s a breeze through the room I’m painting, but conditions not as bad as last time. Last time, the laying off brush was my saviour, managed decent results, but this time, no matter what I do, it’s got a really bad finish, just purely brush marks. no amount of laying off is helping, the floetrol does not seem to stop the brush marks, but it does increase the working time. can anyone help please? Spent ages prepping the room and back to square one!