Holding back??

[Chr999chr]

Had my 08 1200 GSA serviced a month or two back but i have noticed it seems to be holding back. It is more noticeable if the speed is constant, its like going into a headwind or very lightly applying the brakes. If you went out on it for the first time you would probably not notice.
There is no change in the engine noise or mpg and otherwise the bike is running fine. Any ideas where to start looking?

 

[flatdog]

Look..... for the garage telephone number who did the service is what I'd do first.

 

[The bigun]

Strangly enough mine 09 gsa did this last week after putting esso petrol in felt like it was about to run out of fuel or brakes applied but I've just done 1500miles in 3 days round Scotland and its cleared so I'm thinking it was the fuel

 

[kevingambrell]

Every time i fill up at i get the feeling the bikes bogging down.

 

[Bendy toy]

I use Tesco posh with no problems. But Morrisons 95 RON (probably the same source as Tesco 95) made the bike feel like a cylinder had fallen off.