You wont notice the difference until you've done it. Then you'll wonder how you got used to it the way it was...
I think it is one of those things they wont do on a service unless asked.
Tried to buy a chain oiler today, no luck in this two horse town. I was too late for the bike shops today, I will try them during the week.
It has been a bit of an issue for me as the bike has been out in the rain for the last week.
I needed to squirt a bit of oil around the throttle control, as it has become slightly mis-shapen over time and rubbed ever so slightly on the bar endweight.
Releasing the throttle has a dramatic braking effect, but it is easier to feed smaller inputs into it now. Not so much lunging and lurching. A side benefit is clutchless changes are MUCH easier...
I need a new fuel hose too. The old hose had a crack in it, and as I removed the tank fuel started leaking out. Chopped 1" of the hose off and put it back on the tank, but a crack is usually a good sign it needs to be renewed. Down to supercheap tomorrow.