Hi James,
As Reiley mentioned, you do need to reinforce the tab with a couple of extra glass layers.
Even with the extra glass, if you overtighten the band clamp, it will eventually crack the glass tab--especially if you have had a "less than gentle nose gear let down" or two--of course none of us have had one of those--NOT. If you undertighten, it will obviously slip down and provide no benefit. Many have found that "perfect tightness" and have no problems.
I went a different direction. Since the tab breaks as a result of the solid band clamp pressure and flexing, I wanted something that would provide for slight movement but still hold the fairing in the correct verticle position.
I picked up some high quality (I think it is 3M) 3/4" packaging tape that has the fiberglass reinforcing strands in it. I use two wraps with the tape around the leg fairing tab/gear leg. It provides slight movement yet maintains the fairing in the correct position. I simply clean it off and replace it at each annual. Three annuals (sorry Mel--Condition Inspections) and no more cracking.
YMMV
Cheers,
db
After