[aerohead]

I've used the blind riv-nuts under the CRX and had some spin loose.It's a nightmare!!!!!!!!!!! My pilot neighbor introduced me to "riv-nuts" which are attached by pop-rivet and don't rely on the expansion-friction-grip.Harder to use,but won't leave you in the lurch (don't want to lay on 170-degree asphalt trying to remove some panel you have absolutely got to get into).