I'm experimenting with mira for doing assemblies of Velvet contigs without quality values. I saw the warning in the mira reference about attempting this and so included reverse complements of my contigs as suggested and used the following command line mira --project=mira --job=denovo,genome,normal,sanger --fasta COMMON_SETTINGS -CL:pec=no SANGER_SETTINGS -LR:wqf=0 -AS:epoq=0 -CL:emlc=0 I've also tried this supplying mira with a fake fasta quality file and using the following command line nohup mira --project=mira --job=denovo,genome,normal,sanger --fasta SANGER_SETTINGS -CL:emlc=0 While both of these assembled there is still some clipping of the sequence occurring and at the beginning and end of contigs. Do you know why and with what settings I can prevent it? Thanks much Mark message may contain confidential information. If you are not the designated recipient, please notify the sender immediately, and delete the original and any copies. Any use of the message by you is prohibited.