I'm not too sure where you got your info from but the A frame has a replaceable lens. The cro-bar does as well. Get a new lens and avoid the vodka/park mixer.
they do but they are $$. Mine work fine after the fix... at least for another season ;-) Repair and re-use what you can,
2015/16 -3- Kirkwood days
Arbor A-Frame 158 2009-10
Jeremy Jones Hovercraft 156, 2011/12
Subaru WRX 06