Bike 'hiccups'?

[pat74]

Just came back from '2nd opinion' at a different dealer. They say it must be the carburator as (of course they can't say too much without opening it up) the exhaust are having different output temperatures when checked with an external laser heat indicator. Also, the problem doesn't always happen (about 80% of the time). It can happen now, and be ok again this afternoon for it to come back after a while and the circle is round again  :'(

Does that info help?