In order to facilitate collimation, I have bought a set of thumb screws to replace the existing collimation screws.
And to my surprise, the original screws were so short:
I wonder if they won't work when I placed them side-by-side.
AI suggests even longer length, but I have no choice but to buy these to test.
Buying Bob's Knobs will be several times of the cost, so it's nice to explore, trial and errors.
I have used Bob's Knobs maybe like 20 years ago when money was not matter, so I know how to replace them. In short, I replace them one by one:
It's a good fit. Despite the new screw is longer than the original. On removing the "original" screws, I found that it was feeling loose, I began to think they were not original? Or they were somehow abused before? And that also explains why I never attained good collimation with them?
Guess what, the new screw has a good range for adjustment.
They are not without problem, I want a bigger "handle" and the downside was that, the front cover could no longer be fitted on!
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