Section 20 AN rivets too short

Was working through section 20 and saw that the 4-8 rivets called out to attach F-1204D to the F-1204 assembly only come through to 1d. When squeezed they don't form the correct size shop head. I searched the forum but didn't find anyone with the same problem. 4-9's work perfectly unfortunately I don't have any 426's so I'll have to wait.

There's some photos on my blog.

I found the same thing. I cut longer rivets to give the correct shop head.