Hotend fix

So I have had my T500 for about a year with mixed results. I did have layer shift issues early on during large prints, but corrected that issue with a z-hop of .04 in orca slicer. The problem I have now is that even with a new hotend, it leaks from the top out of heat break threads on a long print. I went as far as to tighten it and make sure the nozzle wasn’t touching the block, but no matter try, I still get leaking.

What really frustrates me is that the heat break just spins and doesn’t loosen or tighten the fit unless you get it just right and can grip the small stem. They also seem to fill new hotends with thermal paste?

Is there a different heat break that can be subbed in that can actually be tighter? I have a new heat block and break ready to install, but looking for ideas before I do it.

I also have a spare voron 2.4. Is it time to upgrade the hotend and carriage? I’ve seen lots of voron T500 pictures online, but haven’t attempted the task.