Engine work recommendations

[FoxCorp]

Can anyone recommend someone who knows their stuff on the 583 engines to do some work on my bike?

Despite having the thing serviced, with new rings, heads off, valve clearances etc. it's still not making more than 43hp. Apparently the fuelling is spot on so i'm running out of things that might help as I now have lots of possibilities but nothing definite that might help.

Clearly I might be using this as a great excuse to mask the lack of skill but I'm thinking that being 20% down on power isn't ideal.

Any ideas welcomed at this point!

[Ghost]

Ignition igniter boxes they provide the electronic advance. I had exactly the same prob 2 seasons ago. £ to a pinch od S***. :D Assuming everything else really is correct.

[FoxCorp]

I have replaced the igniter boxes with the ducati performance ones - I hope that they're not the problem.

Might have to try it with the old ones in...

[Ghost]

See if you can borrow a pair of known good ones and just exchange them at the dyno to prove/disprove a point.