clutch installation

[woodsman]

A mechanic installed a clutch in my car and in appro. 3000 mi 2 clutch cover bolts came loose (I know they were once tight because there's grooves from the metal compression under the heads and more) This caused an uneven surface for the release bearing to mate to and that caused the clips that hold the bearing to the arm, to snap off (more details on my other thread 'strange clutch behavior). He used no loc-tite and a Porsche-tech has since told me none is required and that the previous mechanic must not have torqued the bolts properly. Porsche calls for 17 lbs. but this is for use with their steel, dual mass- I'm using a single mass, aluminum flywheel. I'm inclined to use loc-tite out of fear even though the flywheel mfg doesn't suggest it -- I welcome your thoughts and opinions... ever had a clutch cover come undone???
Thanks