Hi Dave,

I just sent my 110 in for service as it appears to have a bent exhaust valve and sent it to the address on the YS web site. Do I need to email service to let them know it's coming?

I did stick a note in the box with the engine describing the problem and a way to contact me.

No, they will contact you if need be. Service phone number is 775-782-4562. Don't bother with e-mail, they will not answer.