Hi all, I was wondering if I could get some advice. I have formed the perfect small arch in my extension opening. Not too large just a tidy little corner curve to take away the open square look of the room entrance. I have purchased the plastic arch beads from screw fix but can not for the life of me stop the things from kinking on the arches. The arch is quite small (only 6 inches) so not as big as most arches. I have been plastering ages but very rare I mess about with arches these days and am a little stumped. Any help would be appreciated.