reinstalling rubber nuts into frame

After my accident the other day I was busy searching for where this little rubber nutsert lived on the bike. All are there in the fairings. I was checking the frame and found that they go in the subframe assembly under the seat. The left one is there but the right one popped out. It is an extremely tight fit so how does one push the grommet part back into the frame. I have it in the freezer right now to may shrink it just enough but who knows. This would the forward most rear cowl bolt nutsert.

Thanks

 

fixed

After much pushing and shoving with a needle nose pliers its finally in.