Cleaning the Canon 135 shutter curtains

[Rosssiiii]

Hi everyone,
I found a Canon 50e with a battery grip for a cheap price and bought it mostly as a spare for spares. The back cover is broken, and I paid €15 for it.

That said, it seems to shoot normally, but I'll have to test it with film.

I did notice a bit of dirt, perhaps it's the notorious sealing glue that can come loose after many years:



What would you use to clean it, and is it worth it?
Cotton swabs plus isopropyl alcohol?
I obviously have to be very gentle, I know. Could I also use those things used for cleaning the sensor?

https://m.media-amazon.com/images/I/815YHKiZcEL._AC_UF350,350_QL80_.jpg

 

[koraks]

I wouldn't touch that at all, at least not yet. First test the high speeds to see if there's any capping (partial exposures with a horizontal band remaining unexposed on the film). If not, use it some more; if there's a problem, it'll get worse over time and you can always look into it by the time it's necessary.