See now that seems to be the most honest compliant about CEN, although unusual. 1 thing to remember when dealing with ANY customer service dept. get the name of the person you spoke with, just in case you need it to reference who told you what. CEN usually does a pretty good job at following thru with what they say, but they do have acouple people who do not follow thru, like any company with many employees. I would call CEN again every couple days to see if they got the new engines in yet. Its ok to pester them if you are out your engine, besides the more they know you are anxious to get back on the road the sooner they will want to get you taken care of. I have said it many times that I'm sure CEN does not delibrately let these things fall thru the cracks, but as you know sometimes it does happen.

I would say call them tomorrow to get an update, but remember to get a name of who you spoke to. Names are a powerful tool when you are working with customer service. And ask questions...

I know this does not help much but....

EDIT: Hang in there CEN will take care of you, they are very busy with units all over globe, so lots of work for them. I'm sure CEN is doing the best they can to get to everybody..