I am ready to reinstall my new engine. Here is a photo of my bell housing with the new dust cover boot. I can't figure you how this thing goes back in.  I drilled out the old boot rivet.  I assume the steel prongs go into the bell housing and bend over to hold them in place?  Does the new clip go through the boot and into the old rivet hole?  I can't make this thing work unless I turn it inside out which bunches it up and interferes with the lever.   Back in the day we never used these things.  Any help would be greatly appreciated,