Mark,
You are correct the stock Pro matte canvas profile did not produce good results with the current Hp Pro Matte canvas. I did end up creating a preset and profiling it and it prints beautifully (using the Pro matte canvas preset). I have been trying to also work with BC Lyve but so far not getting good results. What is the paper advance calibration?
Paper Advance Calibration is supposed to be used when it is recommended under paper properties in the front panel of the printer. This is usually recommended when a new, thicker paper is loaded. If you're having banding issues, zebra stripes, head strikes, and any number of issues,Paper Advance Calibration will usually clear it up. Basically, you load the new or offending paper, perform PAC, thenthe printer prints out a chart, waits for it to dry, then it scans and reads the chart, then makes adjustments to the platten, etc., to compensate for the issues. I uses PAC more frequently, though to assure optimal printing quality.
This and much more is found on HP websites. It's a good idea to find the owners manual and study it.
Become familiar with the functions of the control panel and understand what options there are for getting an optimal print.
Mark