[:S ] looks like toast mate, not good.
I know Iwata & Badger have 'intensive-care' units in their maintenance depts., but this may be beyond that
You need to be able to get a good seal between the body and the nozzle, which is why it is smooth. (part names from Iwata, diagram, below, btw)
I don't think reaming it out will work as you will then change the spacing/gap between the nozzle cap/head cap assembly.
You also need to get it centred to the needle & nozzle cap/head cap assy. Diagram here
You might be able to use beeswax thinly smeared on the tapered rear end of the nozzle, (& on the thread on the body where the head cap fit) as recommended by someone in my hobby club.
I use the smallest of this set of micro-brushes to deep clean inside the body, & plastic handled kids paint brushes to clean the paint bowl.
In extremis, reverse the needle, & feed it through the body from the rear & gently push.
Q-tips are reserved for the outside, & ear-holes only!