this may explain why I can't get to legal max on forestay.
I've always hated light air sailing and this weekend we had 4-9 wind with 3 races where I was not keeping up with boats I had before i changed the roller this season. It currently has too much sag.

Temporarily I will just zonk the forestay a bit shorter to tighten up the sag, which seems to be "enhanced" with the weight of the roller furling. I am currently longer than the old roller but will return to that measurement if not a bit shorter to get more sag out of the forestay. next time i have the mast out will modify.

This may also explain the severe backstay/top batten problem I've had with new mains.

This sound like a workable plan?