Test prints on 7600 have weird midtones

If all nozzles are printing, I suggest simply to print a purge sheet to clear that line:

yes i came to that conclusion also but thanks for the tip.
then i realised i had to agitate the other carts and needed to do a few cleaning cycles to get out the stale inks.
the first time i have a half way decent print!!!
thanks so much!!
more hurdles to come i expect when i try to linearise but that will be another post!