I replaced the baluns in my Carolina Windom 80 after I bought a legal limit solid state amplifier - just in case they fried while I was transmitting. The amp would not appreciate that. Bob at Balun Designs
was very helpful when I chose replacement baluns. (http://www.balundesigns.com/servlet/StoreFront
The connectors on the 22 foot section fried on two separate occasions while transmiting (fortunately before the solid state amp). I replaced the 22 foot coax (RG8) with larger diameter coax (RG8U type) and replaced the UHF connectors and have not had any further problems.
This antenna works well at 45 feet at my QTH. I run about 1KW.
Mike - K2CBI