I don't reduce it when it's cold, but when it's hot I always reduce
it 10%, sometimes more when I'm doing a bumper and don't want to
buff it. I can get it real slick that way.
I can't tell a difference with less than 10% reduction.
It all depends on the gun and tip size too.
Once, by mistake, I reduced it 30%.
And it did fine, was slick and didn't die back or shrink.
I was impressed.
