RickLaRock

Thank everyone for help. I can fix it by myself.☺️

there is a slight resistance.  when moving it makes a sound similar to the well-known asthma.

Hey everyone. I have a problem with my canon a1.

I recently bought a Canon a1.
 Now I noticed that the aperture (setting to
 manual, aperture at 22 and in bulb mode) Normally, when triggered, it should close to the preset value.
 But it doesn't do it with every release. I also noticed that when I close the aperture completely in manual mode and stretch the lever, there is a squeak.  similar to the well-known asthma problem.  apparently the squeak comes from the vertical lever behind the bayonet.
 I tested different lenses.  All the same.
 Is there a solution to this?