danglar, you need to rotate those blocks along with their attributes... Just use rotate command with "reference" option and for first reference choose angled vector and for destination use your Xaxis aligned line - or turn ortho F8 and pick destination point somewhere on positive Xaxis value (for start point of rotation use OSNAP "end", and for picking vector use OSNAP "nea" and for destination vector turn OSNAP off F3 and pick point on Xaxis positive value)...