You need to look at the suspected fibers with Polarized Light Microscopy. http://www.asbestostesting.com/asbimages.htm
Where is the suspected material? Behind the Lamps? There are a number of suitable substitutes for asbestos. http://www.mcmaster.com/#fabric-insulation/=m6d5m8
The later designed Durst heads used forced air cooling without any asbestos in the head. Do you have the cooling fan?
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