Appart from

[neten-o]

Starters going up the creek..what is the area that gives the most cause for concern do you think?

[Lew]

Leaky tranny mainshaft.  Not really a source of concern...unless you're running a rear belt....then it's a major concern...and a major pain in the wallet.
drip....drip....dripLew

[76shuvlinoff]

 cobbled electrical

[stroker800]

  Any thing I have ever built,,,,constantly goin over the bike,,,still gettin use to  panhead rocker noise and wondering if its gonna grenade,,,,I have to ride each bike after building for awhile to feel comfortable with long hauls.
Dave

[dave_9113]

Dino or Synthetic oil just keeps me up all night.    Nothing $$ can't fix. 

dave

[pappyfreebird]

will i git home befoe the olady finds out i went ridun again

[dablaze]

Whatever the latest noise is...

For me my gremlin is chasing down and figuring out what mods been done by someone else.

Craig

[shovelbill]

that should about cover it all for now