Not overly concerned, the LMT 10.5" is quite a heavy profile and the barrel/rail would have to make a big flex before the barrel contacted the rail. I will let you know if it causes any problems.
You guys are right, we shouldn't use a crush washer when mounting a suppressor. We did mock this up using the factory crush washer to see if it would fit. As everything appears good we are going to re-install the can using shims and blue locktite, as prescribed by Gemtech.
Should have the can setup correctly today so I can get to the range later this week and get it a try...
Cameron

