Sorry I missed your ? Have had hunters on my lease, so a bit busy!
62" will take you past 30" draw.
How is your weight before reducing to 1/2"
I usually go 1.25" up from center for shelf and 1/8" to 0 pos tiller. Not sure how your setup will work.
Try to find bowjunkie's tillering thread, he has some very detailed info in there.
I never have much probs on tiller. But making 1/8 to 0 positive, I mark every 6" on tape and compare distance to string. Also check width there with a dial caliper, you will find they correspond.
The narrow fades and wide tips may cause a bit of shock too.