Commanderpete - have you contacted - or should I?
I am also suffering from a cracked stern light glass globe syndrome... I could smack myself! -Ugh!

I was lucky to have all 3 globes intact... but no longer!

I installed a new gasket when installing the LED and I guess I tightened it too much for the beautiful globe's liking - not enough to destroy the globe straigh away, but enough for it to develop a crack.

I thought that I may be able to keep moisture out with a bit of prnetrating sealer, but nope - the water went in. I took the light apart and the 40 year-old globe is now in 3 pieces.

I am waiting to see if the globe can be somehow repaired. (A glass artist friend is attempting some magic...)

I've searched for a replacement with no luck so far... Perhaps these might fit?!