Never found the chunks. I was just blowing it out with my mouth. I guess I better leave it be. I'd hate to have any crud going all into the carburetor. It was neglected for probably 15-20 years (I have been driving it since I was 10). Probably had the same oil in it for 15+ years (until last year) I changed the oil for the first time once I started thinking about oil (thank you BITOG), and now am going through all the fluids on it. Right now, I'm trying to find what's best for the Gear Oil/Hydraulic Fluid for it (5 gallons). It was given to me not to long ago, been in my family since purchased new in 1950 (or 1951, I always forget). Great running tractor, hope to keep it that way for another 60+ years ;-)
Also makes my mamaw glad to see it running. She has farmed with it for decades. She's 86 and can still drive the thing perfectly. Taught me how to when I was 10.