Calling all body pros and paint guys, need help on spider webs in poly bumper cover

Long story short see this post: http://www.stangnet.com/mustang-forums/802610-need-advice-86-gt-front-bumper-cover.html

I had some spider webbing in my front bumper cover on the 86 GT. Its off at the paint shop now, the guy is trying to satisfy my craving for perfection and he feels like the bumper cover may prevent that from happening. We cant get it remanufactured because the plstic is supposedly too old. My only other options are junkyard take offs for a range of prices that look like CRAP see these ebay links:

http://cgi.ebay.com/ebaymotors/79-8...r_Truck_Parts_Accessories?hash=item25577031cb

http://cgi.ebay.com/ebaymotors/ws/e...4506.m7&_trkparms=algo=LVI&itu=UCI&otn=3&ps=6

Mine was fine except for the spider webs and now Im loooking at 500 bucks more for a repro cover with shipping and all.

Is there no way to fix the bumper so that the webs can be avoided? I realize it is caused by cracks in the plastic. Any ideas or advice????

I couldnt see any spider webs in the photos but I assume they were there. I will tell my body guy about that stuff and see what he says. I know he i susing base clear, not a single stage but that wont likely matter if the primer is compatible. thanks for the input!!!