spyder 4 calibration and prints still too dark

I can't let your crap printer comment go by without mentioning to you the phenomenal deals available on the very well regarded Canon Pixma Pro 9000 Mark II.  Many on Craig's List for little more than $100 due to them being stripped out of a Canon conbo rebate deal. That is less than retail price of the included ink cartridges alone. Also on ebay. If you would like to step uo hour printing activity, you should really give this a look. With home refilled carteidges, you won't find a more economical printing option.

Robert