[Super_Dave_D]

This seems very simple but I need your help.

I am in the process of rebuilding the REAR calipers on my 88 Carrera. All is great until try to put the new piston dust cap on. The cap has the metal hoop inside the rubber cap. I have ruined 2 caps and just cant seem to get it on. WHAT IS THE TRICK? It has to be something simple but this has me a little bummed out.

I appreciate your help!