I think the mechanical means for extending the boom is YOU, not that I can figure out what an extended boom would be good for as a wrecker.
Many times in operating a wrecker I raised and lowered the booms, the booms could be split on our unit also, but I can't think of much value in having the ability to extend the boom unless I was wanting to pick something up and needed it to act like a cherry picker.
What ever the guy had in mind for this unit he did not do it right cause to have the cable rub anything is just WRONG.
I'd cut that portion of the center boom off and eliminate the problem. It's not like your going to change a factory design, you'd just correct a problem.
Dan
