the one's you received k-1's from are publicly traded partnerships (PTP). you need to report the k-1 info for each. the broker's 1099's does not include the partnerships' income and any distribution you received from them should be not be on any line of the 1099-Div. however, if you sold any of them the 1099-B does not reflect the correct cost basis because the broker does not know their activity (profit/loss/distributions) and adjust tax basis accordingly. each one you sold should have included in its K-1 package a supplemental schedule from which you can compute the ordinary 751 gain (will be a separate column on that schedule and line 20ab of the k-1) , if any, and the capital gain/loss on sale. since the 1099-B report's the wrong tax basis the 8949 instructions say to follow the following procedure to report the correct cost basis
use with code B
• If this transaction is reported on a Part I with box B
checked at the top or if this transaction is reported on a
Part II with box E checked at the top, enter the correct
basis in column (e), and enter -0- in column (g).
box B and E indicate tax basis was not reported to the IRS which is proper for PTP sales.
reliance on someone that doesn't know the rules for tax reporting can get you in a lot of trouble.
