Booming mini explosion on ignition

Hi I have a American Standard GPH Hydronic boiler and I need some help. I was working fine in the spring before the warm weather. I did not turn off the pilot so that is not an issue. What I did do was take out all the burner tubes and clean them. I also tried to clear the the jet hole with a small paper clip. When i started it there was a wooshing explosion and I yellow flame out the front. I boiler has 8 tubes for flame and I thought they were all the same. I think I may have been wrong. I think i put then back in a different order. Also I have since learned that each tube has a air mixture adjustment and I may have messed this up as well. I also was wondering If there is a tube that MUST sit next to the pilot light and is just a little different from the others. Finally I have learned about delayed ignition and the issue of too much primary air. I mention this as you can see in the photos I posted the sleeve in each tube seems to be over an inch from each of the jet nozzels and I was wondering if this could be a cause. A Any help and I would be grateful michael