David, Gotta love stick and stone technology. You are a genius!!! Bungee (old style with deadly wire hooks at ends) hooked into toggle at the upper shroud and then run over shrouds to the handrail has worked...long velcro straps work too - my boat has toggles in addition to the turnbuckle toggle end at the uppers -they actually exacerbate the problem ( I fooled myself on that one heh?) Man - - anybody who figures out the cosine error of the mast butt angle is serious ! ! Excellent - we have someone to figure out these problems for us now COOL ! ! {;>) Spare t-bolts are a required item in the tool kit. (make sure they are the right thread) Think I may go up to Lake Pleasant on Wednesday (3/30) -forecast looks 'nice' - come on up! Have Fun, Go Sailing GO In a message dated 3/29/2016 4:53:01 P.M. US Mountain Standard Time, drifkind@acm.org writes: https://www.dropbox.com/s/tvrfyvkihd3t310/P3290004-Edit.jpg?dl=0