I grew up using Krylon. Over the years, before Krylon was offered at Lowes I drifted into using Rust O Leum since I live near one. Long story short, I've had countless nozzle failures and bizarre atomizing with Rustoleum, especially with that ridiculous finger trigger type. So, I go Krylon exclusively now, I get better flow characteristics and zero atomization issues, I live in Phoenix so hot is typical. That being said, you can probably bury your pebbling issue with clear, as long as you clear it heavy enough each coat, with multiple coats, maybe 4 or 5 to be safe. If any of your clear coats are too thin, pebbling may continue. Get indirect light right so you can confirm flow. Clear Runs can be sanded out. Sherwin Williams offers catalyzed clear in a can ( 2 part). I've had good success with it for small parts and it beats mixing, loading and cleaning a gun everytime I need a performance clear.
Good luck!
