oldsvrider

ok i just had my 1999 curvey serviced its got a K&N and remus can with baffles out (not had it put on a dyno yet to see if it needs up jetting). had the valve clearence's checked but were all within tolerence, so i think the engine noise i have (load ticking) must be related to the cam chain is the right?

All the usall has been done oil, plugs, k&n cleaned and oiled and had the carbs balanced.

so any way at first the bike rode well nice and smooth but over the last couple of days there has been some problems, firstly its serging at slow constant speeds and then when i roll the throttle on and hit the power band there is a big serge before the power comes in.

now i have read some past threds and noticed the serging at constant speed could be an air leak some were, so do any of you know where i should start looking for this. as to the other problem I have no idea what this could be so any help here would be great.