Ray,

Yea that's the ST 51 on my Twist. (Great big muffler, loud as heck!) This extension has never come off the ST51 or my Pro 46. But I see what you are saying about the taper on the Saito muffler. My bet is that it would stay on the Saito if you roughed up the surface. Maybe someone will give it a try.

Got this email from VF today:
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Dear Jon:

About 6 weeks ago we decided to implement a modification for the Edge following two isolated reports of wing failure as a result of shearing of the wing joiners. The modification called for changing one (of the two used) set of joiners with a stronger ply material. The new joiners were manufactured end of last week and we delayed the outgoing batch including your order by a few days, so that we could ship these airplanes with the upgraded joiners.

We know you must be anxious to receive your airplane and wanted to thank you for your patience. You will be receiving your order later this week.

John
VF
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I haven't been pestering them so they made some big customer service points today. And I told you all that they were making mine better.