What I do know is that it under designed,over drawn, and stacking on you
I tell new guys not to put all the work into sinewing a bow until they can confidently and successfully hit there intended weight and draw without over stressing it during the tillering process. lesson learned for ya....you can add more sinew..but youd have to add it very evenly so you wouldnt have to retiller and lose what ya gained....but in all honesty id let this one be and chalk it up to the learning curve and go make another bow(no sinew),and just learn how to tiller first,and make the design fit the intended draw and weight(longer).....your not gonna be happy with your first,second,third,etc....it takes several or many more bows to be somewhat satisfied and happy with your results