Hello, I am hoping for some divine wisdom with a failed piece. First Attempt: using 2 10" rounds of 1/8" BE white and topped with a variety of strips (again BE 1/8") including mint green, red, amber/white streakie for a total thickness of 3 layers. Full fused perfectly (or so it appeared) on a very slow firing; piece was then draped over a stainless floral slumper and slumped (again, slow ramp up, top temp 1220 w/ long hold); piece fractured in half somewhere in the beginning stages of slumping. Tossed it and started over, same glass as in first attempt. This time, after full fusing, I noticed that one of the pieces (the amber streakie) was very wrinkled in appearance & had a very matte finish as compared to the rest of the piece. There was also a hairline fracture surrounding this little rebel. Fracture was in surface only (not traveling through the white layers underneath), so, feeling a bit daring, I tried to slump the piece, again using the stainless slumper. Results: the piece fractured into 3 pieces on the ramp up. Culprit: the amber glass...the mystery: the amber glass was used throughout the piece with no other ill effect!! WHAT could this BE?? Skutt glass kiln, no burnt out elements, no part close to the sides of the kiln... I will attach some pictures that I HOPE will provide better description. I am stumped. Thanks to anyone with some thoughts!!