Modern Vespa

I recently had my LX 150 checked out because of the noise in the transmission cover. After 5 days, they said I can pick up my LX 150 and bring it back when Piaago returns their call. They do not know what is causing this problem.

1. What I notice going home, is I am hearing a "putt putt putt" from the exhaust during deceleration right before the clutch releases. I never heard this noise before. It's this normal?

2. Another thing I notice, they remove the EVAP hose. Which I am okay with, but they also cut one of the vacuum that connects to the manifold. Is that okay?

3. My scoot automatic choke doesn't seem to be working. I think it's related to problem #1. I would start the scoot up cold and the engine does not rev up to warm the engine. Is it because maybe the air/fuel adjustments is off?

Jeff bring it to lunch on monday and have jim look at it quick. His came out of cycle city worse than it went in. That sucks