I have been trying to add 4:1 or 3:1 control to my IP 31 traveler but can't find the parts. The closest I came was RigRite, who listed the Ronstan parts in their catalog but for over a year they tell me that they are back-ordered. I even contacted the sales rep for Ronstan, but to no avail. I have given up on them and Ronstan. I know that IP Yachts offered it as original optional rigging. So someone must have it. Any thoughts or help would be appreciated.