I need some ideas to get the rear element on my 150mm Xenotar unstuck. I'm a bit apprehensive with applying too much force as I don't want to damage anything. I've tried the following with no luck so far:
1. light heat with a hair dryer + moderate force with my hand
2. liquid wrench + moderate force with my hand
3. liquid wrench + light heat + moderate force with my hand
4. adjustable hose clamp with moderate tapping + heat
I didn't try one of those can openers as I've read they don't distribute force evenly and can damage things.
Not sure what else I can try that is the next least destructive method in terms of risking damage. I'm contemplating sending it out somewhere.
Thanks,
Peter
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