hey all my name is trevor, im a long time reader first time writer. ive ownned a 2005 monaco 125 for about 8 months and racked up about 5100k. ive had the first service and then another service at about 2200 and i done one at 4000 after they wanted to dharge me 120 to do it when the mechanic told me all they do is change the oils and clean out the filter( a bit of steel wool! ) anywho, the scoot has been great up until recently, it has no worries at all doing between 95-105( no mods just pulp ) but about 2 weeks ago all of a sudden it developed a surge, the weird thing is it was surging but the engine note was not really changing. it was coming and going for a few days and the it was getting more frequent. the other day i was sitting on 100 then it just died, i lost about 30km/hr it just sounded muffled ish as if i just blocked the air intake, i travelled a few k like that ( full throttle btw ) and had to stop at the lights, when i took of again the prob went away for another 5-10k. i dont want to take it to the dealer as they want to charge me 70p/hr to find the prob then charge for necessary parts. id rather try to fix it myself. so after writing this novel i was hoping if someone had this same or similar prob with there 4stroke scoot or monaco they might be able to give me some tips. thanks everyone in advance.