haze as well slumping large shallow pieces

[Jeri D]

After my beginner early bubbles, i have returned to bigger and bolder. Now something new. On slumping both a 14" round(clear with confetti and stringers, also red w/ pattern bar) ) they both hazed on the underside in the slump except for the middle, where there is slight bubbling too.
I can't find where I mislaid my schedule, so help me there too.
Does a slow slide on a shallow mold cause this? Is it picking up kiln wash. Inquiring fuser wants to know
Jeri from MV