Dealer service, really guys?

Since I got the new tires (35") my speedometer was about 10mph off.  I took it to a Jeep dealer to get...

• The  speedometer recalibrated
• 20k mile service (can't believe I'm already there)
• The trailer hitch wiring fixed (doesn't work)
• My clutch checked out (it was creaking)

They said they calibrated the speedometer to accept the largest tires possible that the computer would accomodate.  The hitch wiring will need "further diagnostics" (I was told this after spending $3 on a new fuse they thought would fix that problem).  The clutch had a service advisory for it to grease a particular part.

The speedometer, after $120, reads 7mph slow instead of 10.  :-/

The hitch wiring still doesn't work.  :-/

The clutch still creaks.  :-/

Not real happy, I feel like I spent $140 (total out the door) on the 20k mile service alone, which is really just a bunch of inspections (all of which apparently passed so there was nothing "fixed").

I'm looking into second opinions on the tire size thing, seems weird that of all vehicles a JEEP wouldn't be capable of correctly reading 35s.  Shoot, people are commonly known to put 40" tires on Jeeps.

I feel cheated.  I called the service guy and let him know.  Maybe I'll hear back.