Help! its still dying on idle -What could be the cause of this failure?

Thanks for the offer. Hopefully it will go smoothly. I think the reason why we have such a poor choice of bike mechanics is because the season is so short and there are so few bikes comparatively that it really is a part time job for the 4 months of summer and they have to earn a living fixing lawnmowers, outboards, chains saws and such so they dont invest in upgrading their bike mechanic skills