Hi everyone,
I wanted to share this, perhaps others have already had this issue.

I noticed small reddish - brown particles in my fuel strainer. They were small and I kept my eye on it to see if it was going to clear... it didn't.
I towed the plane back to my garage and when I took the cap off the right tank and shone a flashlight in I noticed a small amount of this debris directly under the opening. Thinking that was odd I looked at the gas cap and saw rust and a white greasy powder of some sort.

I cleaned the cap off thoroughly and flushed the tanks until clear, hoping to have no more issues - and I will examine the caps regularly.

Karl