I have noticed this "drift to the left"....I always thought it was just the Big A$$ primary on the left side of the bike, and the addition of my swingarm bag!!&nbsp\\;

 

Check your rear wheel alignment.
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I bought mine brand new from California HD with a pull to the left.&nbsp\\; Took it to another dealer for the 1k and they adjusted everything to spec that California HD forgot to do.
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(Sorry, had to stick it to California HD, they blow.)

 

Well I found my drift problem I pulled front wheel and checked bearings both are good,while front wheel was off the ground I noticed front end fall away was to slow according to spec in service manual. I adjusted fall away and now bike goes straight as an arrow.I did check all other things like rear wheel align and rear shock adjustment both were good.

 

my 07 flstc drifts to the left also. it has done this since day one, so i dont think it is a bearing. i was also thinking about rear wheel alignment.

 

What causes slow fall away? Neck bearings too tight? Something else?

 

Neck bearings to tight I had to loosen neck bolt a little to get proper fall away . I had adjusted it prior to doing all the other work because of front end clunk ,at the time I did that I just tightened without checking adjustment apparently I went to tight.