Hey J Cralley and Greg, ya the retarder controls it pretty well, I use the thinning in nitrate Dope. And use the nitrate to prep the Balsa. Thin coats and control that blushing. And light sanding with 220 wet or dry. I started using that Balsa fill and really like it. It’s called Balsa right! I plan on the Ring FlyOthon in October 2024. Kinda looks like I will be Stuging it right now. Thanks for the post guys really enjoy the reading.AJ