Actually, the way he does it it will last MUCH longer than the old heat and clamp method. If you read the website you'd know that.

Mike, for someone who "knows" so much about RC you don't come off very smart. Your attitude tends to make people put you in the asshat category and people ignore any advice you have because of posts like you made above. Rocco may tolerate it here, but your attitude and comments wouldn't be tolerated on any other forums i know of. If you want to be treated with respect then you should first give it.
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Currently RC portwork isn't very advanced. Its very similar to the 50's and 60's where people knew this guy who could do wicked work. But the portwork isn't documented to anywhere near the level as today's porting on automotive engines. We don't even have a standardized dyno test or a SAE rating for gross output on these engines. Only mfg claims. Its not any one thing that makes a guy's portwork great. Its little things. Things that ONLY come with an understanding of fluid dynamics and knowledge of combustion chamber design that works.

Gimme a flow bench and we'll document how much a given airflow a given engine will support at a specific crank speed. That is a dead give away to how efficient an engine is when it comes to the crank design. However, for true power one needs to take into account the pipe and intake/exhaust timing of the portwork on the sleeve.

I may not know the details but I know whats important.