Quote:
Originally Posted by Steffen
In fact, the one you're receiving has had that mod already taken care of  I put the rear ring up the front where the other ring is (you can remove it altogether if you like, I just didn't want to lose it). Collimation is far more predictable and easier this way.
Cheers
Steffen.
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Mate, just arrived and it's in beautiful condition! Many thanks! I see the rear O-ring has been moved. The spot is a good shape and size. Nothing I can play with

. Except, maybe, wrap a bit of contact around the 1.25" barrel!

But with my Antares twist lock adapters, I don't even need to do that any more!

OK, I'll put it into my super-duper collimating jig and check self-collimation!