I've had this bow about a year and never had a string for it. I picked up a string last week and am amazed at how well the bow shoots.

The brace hieght now is about 5 3/4. What would be a good starting point when i start to tune the bow.

Yukon brace height should be 7 1/2 in.  I have the one I first shot in 1967 and it has always shot well at that setting.

http://www.archeryarchives.com/shakespearetable.htm

Yep, 7 1/2".

Yukon X24, 1970, 60 inches

Recurve

Weights 25 to 50 lbs

Woods brown glass front and back

Handle Polished Island maple, with built in thumb rest

Plam-pressure fit grip

Brace height 7 1/2 inches

Sight window 4 1/2 inches

Ok thanks. I had moved it up to 7 but will move it to 7 1/2 when i get arrows to set the bow up with. I can't belive how well I'm shooting this bow and the arrows i'm using right now are way to over spined but i'm shooting way better than i ever did with my longbow but may be a wegiht thing more than nayhting

Shakespeare's are great shooting bows.  I haven't found one yet that didn't shoot well.

Don't forget that the 7 1/2" is a recommendation, not a requirement.  Set the brace ht where it works best for you.