Replying to Newb JP vs. Julien Mounting Questions

Alrighty, I just got a pair of JP vs. Juliens, and now I have some questions about mounting them. I've read all the threads and read about mounting skis, but I still have a couple questions.

1. It sounds like +98 from the tail is a good mounting point. When measuring that, should I bend the tape measure so it bends with the tail, or should it go straight across? The mount point is very different depending on how I measure it.

2. They have been mounted once and I could remount the toe piece in the old holes. Should I tell the shop to do this? I looked at the mounting point, and if the line on the top is correct, remounting in those holes will make it -2cm which is where I want it.

That's all I can think of for now, but I may have more stupid questions, haha. Thanks guys.