I just spent an afternoon ripping apart 6 chevron blocks because I had mucked them up using the directional fabric incorrectly. I tried to talk myself into leaving them; didn't look bad really but after 3 days telling myself it was fine.....arrrggghhhhhh...I just couldn't leave them. Particularly after I learnt how I could've/should've avoided it in the first place.....thankyou all the kind QB peoples, another little lesson learnt!