I think your theory is correct. As far as I remember, the best solution is to retard the timing...which I do not think is possible on modern Hondas.
The problem may be worsened if you use bad quality fuel and the bike needs a service ( dirty air filter, old plugs etc ) Maybe an octane booster helps,too?
Like you, I am guessing a bit. If you don't get a good answer here, then try www.hoc.org.uk and go to the 'answers to correspondents 'page. You should get top information and help here.
Hope it works out.
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