Rog, I thought those flies were going to dodge the batter, but you finally made the Belt... ===[**CDM**]===

Thanks, Lex!

Letter of zero length (7)

Oops - belated hints:

Direct on the left
Wordplay 1+6

It's all Greek to me...

omicron

Has to be!

Nice solve: ===[**CDM**]===

Efcharistó, Rog.

Current doctor provided temperature (5)

Direct on left

cc+vc+c

drift (dr + if + t)

You sure caught my drift. ===[**CDM**]===

Thanks!

Count Olaf tried to do this to dull the pain? (10)

or, if you're more into classical literature, solve this one instead:

Monks tried to do this to dull the pain? (9)

Direct on the right: Monks is not plural.

So it looks like a choice between murderous villains in Lemony Snicket or Oliver Twist, but I am still not much the wiser...

(Yes! --and both have something else in common, too...)

vccvcccvcc

or

vccvcccvc

and it's a bad pun either way.

I think I need a letter hint, or perhaps a pill for my headache...

Vowels all different: e/i/o, not necessarily in that order.

Weirdly, the Simpsons episode that first aired two days ago made (almost) the same pun.

endorphins?

As one does, apparently. ===[**CDM**]===

I don't get it! Would someone 'splain it to me?

End orphan(s) - or were you having us on?

An amusing groaner!

Thanks Lex, but I guess the problem is that I don't understand "Count Olaf" or "Monks". I live a sheltered life.

Finish cutting in angle (4)

Fish ("finish" cutting "in") - neat!

You caught that one, Rog! ===[**CDM**]===