Go to 5 different shops and you will get 5 wildly different fits. All will tell you that you were way off and all will say they have improved your efficiency, all will make you uncomfortable and then you will end up going with what feels right and be happy ever after.

That is my experience of "pro" bike fits - MY ACTUAL experience - no exageration.

A large part of the reason for this was that my knees were poorly aligned and needed longer pedal spindles to get comfortable - try asking a bike fitter if you need longer spindles and they will look absolutely blank before looking at your pedal style (which of course wont be natural becasue you on a trainer, your fresh, and your on level ground) and teling you no - or "some people do but see how you feel and if you feel too narrow then we can try some" - GREAT I can "try some" without your say so thanks.

Bike fits are hugely hugely over rated - IME (before you argue with me)

Edit: I suppose one thing in favour of going through the process is that I learned about the issues along the way and sometimes it just helps to discuss things to get thinking about what might help. For me sadly, the results dint come until I got the tools out myself