On the Targa LX it has a plastic slide throttle in the handle. Well, I was riding it the other day and the twist part of the throttle just popped out! It got stuck over-revving and i had to shut it off. I took it appart, and tried to put it back together, but there's this return spring on the inside of the handle grip that clips into the throttle assembly on the handlebars, I thought i popped it back into place, but it KEEPS COMING OUT. The moped is BRAND NEW, it barely has 100 miles on it! Does this happen all the time, or is this a factory defect that I should have my dealer fix??? Thanks.