any advice about rubino oro moretti

I finally got my hands on a small stash of rubino. This glass evidently needs to be handled differently.....ugh! On a few occasions I have had success, but mostly I end up with mud or smudges in the glass. I am making 3 petal flowers and one of the three petals will look burnt.

Any advice or ideas? (I am using a hot head...but I do great with other glass)

Thanks all, Janet R