I have a Blackstone K-1 with data in Box 1 & 2, And Box 16 with data in items A, B, C, D, E, F, G,I,J,M,N,P,Q and U. How many K-1's are needed with what data?.

i have a blackstone too - my experience, put box 1 and 16  A & F on one K1 all the rest of 16 can be entered on this K1, 

2nd K1 box 2  with 16 G.  

I do not have a H, if it is there then i would say 3rd K1 with Box 3 as 0 and the data entered for 16 H.  This worked for me try it