Welding of embeemnt to existing rebars is not considered good practice. It is hardly 'embedded' into concrete and may spall the concrete over rebar (will deform the rebar also).
You should get proper bond length. If the force required is more, increase the dia of bolts, ut take care as it also...
County,
Just a guess...Use your plotter specific file for printing. Instead of printer.plt, use hpgl.plt or other plotter file while you printing. I guess the output will change. I dont kno for better or worse though.
hope it work better..-|