flat colour T-print fail... light, cloud bands across it.

Hi,
having problems printing flat colour:-
Using a teflon pillow inside the tee.
this is the result...
http://www.dyesubforum.co.uk/vbforum...tid=4872&stc=1
not experienced this before. strange. Any ideas why? HELP!

don't use the pillow, it creases and gives uneven pressure