I am starting with qdec and i have a simple question. I have 30 recon-all subjects but I didn't do the -qcache option. 

1- I want to know if I need to run this -qcache option even if I use the fsaverage target subject, or this is only necessary if se my own average subject?

2- Where do I make the connection between my subjetcs and qdec? It is only in qdec.table.dat?