Mature Metal Base Ring

Hey guys,

I've just started out using my MM jailbird again with my wife and am finding the Base ring far too tight at the moment. Perhaps it was never the right size when I purchased it some years back.

My question is does any other base rings fit the Jailbird? So not necessary made by MM.

The reason I ask is being UK based the shipping times are long and the wife and I are rather excited to get going but the current discomfort/pain level is currently a bit to high for long term wear.

Another reason for asking is I don't want to spend $150 to get 1 base ring shipped to the UK!