Where did you order your Shinko's from? I ordered 705's from BikeBandit back in November, they sent me the front but the rear was on backorder. They ultimately cancelled it saying the manufacturer would not give a ship date. I emailed the distributer and got this:
Shinko is testing an improved version of this tire that will better handle the heavier loads of the large displacement dual sport bikes that it fits. We hope to have the testing done soon.
Western Power Sports
Street Product Manager
Shinko Tire Tech and Development
601 E. Gowen Rd
Boise, Idaho 83716
Phone (208)376-8400 ext. 3404
Not sure what that bodes for the 705 line, and everywhere else I checked was out of stock as well. Were you able to get some?
Still tryin' to recapture the magic of being 10 years old on a Honda Mini Trail 50...