1/ The watch runs about 25 seconds fast per day, is this normal, can it be adjusted ?
Yes it is normal. Yes it can be adjusted.
2/ The Chrono works fine, however as the second hand ticks through about the 58 second mark it stutters and then jumps forward to catch up where it should be, is this normal ?
No.
3/ The chrono start button is stiff to start the chrono, but operation to stop it is fine, as is the reset, is this initial start button stiffness normal ?
Yes
4/ Setting the watch so as the second hand sweeps through 60 secs and the minute hand lines up with the minute markers is trial and error, having never owned a mechanical watch this may be normal, can anyone advise ?
You lost me on that one.