Thank you. Definitely going to be trial and error. I'm a lake sailor and in no hurry so I'm mainly focused on ease of use. I have the sail pulled way up in the pictures but it is about 24" higher.
I'm a little confused about the "need to move the jib sheet block aft". Does that mean the attachment on the deck? So I want to move the attachment back to adjust for the steep angle? Is there a proper angle to be at? The PO had fairleads all over so I'm not sure it was correct to start with.
The Jib Sheet "block" could be either a fairlead or a block. Its the hardware on deck that leads the jib sheet attached to the clew of the sail down to the deck, and leads it aft.
The best method of figuring out approximately the right location is to look (or draw) a the side view of the boat with the sail on ( or drawn), and then draw some "imaginary lines" from a point on the luff then through the clew, and down to the deck.
This is about a 70 or 80% jib, based on measurements I took off the picture. It looks shorter on the luff than the typical 80% small jib for the M26S. Selecting the right point requires a bit of knowlege of sail design.... and so, for this tall skinny sail (with an aspect ratio of at least 3.5 from the picture,I'd pick a point about 55% of the way up the luff, starting at the clew.
Just by luck the jib sheet fairlead/block appears to be in approximately the correct location, which is fortuitous (Based on the picture. Pls keep in mind that there's some distortion in the picture compared to a square-on picture and that the sail isn't pulled flat.)
One thing to double check is this: Does the leech hit the lower side shroud when you sheet the sail in tightly?