mcgowman

Two smaller, separate battery chargers instead of one large one. If one goes on the fritz, at least you have it's sibling to charge with.

Check Ebay. Sellers there are more likely to sell in smaller quantities. Searching is a bit overwhelming at first, but some sellers let you pick the size/diameter desired.

Lots of coral bleaching there?

In case you're still stuck, try some heat or cold treatment. I had a similar issue with a Inon snoot some time back. Two step up rings with fine threads were hopelessly locked together. Tried a strap wrench alone and with penetrating oil, but no luck. Finally put both pieces in the freezer for a bit and then put the strap wrench on it again. They finally came unstuck. I guess cold shrunk the pieces enough to permit movement. Mild heat would do the reverse. Maybe a few cycles of cold/heat might generate enough expansion/contraction to break free any oxidation. Hope it helps.

Just another convert from the other 'pixels' forum... Happy to see the community active here are recent articles published. Hoping to contribute when possible and learn from those with more experience.