To reinforce and expand on Shane’s reply:
#3 - You do not need to invert the image, the PiezoDN software does that. Be sure you have selected Quad1430-PiezoDN as the printer in Print-Tool, not Quad1430-K6 which is for normal prints on paper. Keep in mind that you do need to expand the canvas size to you film size filling the canvas with black in order to prevent the printer from trying to print a solid black border all the way to the film edge. This will make a mess in the printer - been there, done that! If you want a masking border for a clean edge you can do that too, but not out to the full page size. The unprintable parts still must be filled with black to avoid making a mess. I can post examples if you want.
#9 - First, your file (document profile) should be in GG2.2 in Grayscale mode. (It can also be Adobe RGB 1998 if you keep your files in RGB mode for some reason.) For Printer Color Management in Print-Tool you have 2 options: 1) No Color Management (I prefer this method) which disables ICC profiles. Whatever you may see grayed-out in the profile field is irrelevant since it is inactive. 2) Print-Tool Managed with an ICC profile and a PiezoDN curve which is set on the next dialog (QTR Setup). Note: Early versions of PiezoDN had some IJM-made ICC profiles for Platine, HPtR, Revere, and COT320. I’m not sure but I think these were eliminated in later revisions because they proved to be too specific to the conditions in which they were made. Everyone’s darkroom practices and conditions are a little different. Best results will be obtained by making your own ICC profiles (if you really want to use them) and QTR quad curves or at least linearizing the provided master curve.
#14 - The best practice is to start with the master curve, print the 129-step target with it, then make a Pt/Pd print of that, read it with a spectro, and use the results to make a custom linearized quad curve tailored to your methods and conditions. The manual describes this process well, but I can help guide you through it if you want. I’ve done so many now it has become second nature. If you want to try the OX-IJM curve just to see how it looks, Berger and Platine are actually quite similar. As long as you are using potassium oxalate developer it might be close. Ammonium citrate tends to be more contrasty but how much varies from paper to paper. A more significant variable is your exposure unit. Different UV exposure lamps can produce very different results.
#18 - Doesn’t matter for the 1430 since only one black is installed. (Be sure it is PK.) This setting is for printers like the 3880 etc. which have 2 blacks installed, in which case it would be set to Photo.
Hope this is helpful and not confusing things further.