Best air seal

Thank you for the response gugesmk3. Yes it is a full stroke set up. I have not and do not plan to remove any teeth from the sector gear. I was initially using silicone grease, but took someone’s advice (a very experienced tech and administrator on another forum) and used silicon oil to try to squeeze out a few more RPS by reducing friction. What I'm trying to avoid is the gumming up of the rails on the sides of the gearbox which has occurred in the past with other lubes when that stuff starts flying off. Which lightweight grease would you recommend?

I started off with a Lonex GB with all Lonex internals. But it quickly became apparent that while they do make some quality parts, not all of them are the best choice for my particular needs. Early on I suffered a catastrophic failure of a Lonex piston (well-made but far too heavy for a high speed set up even when Swiss cheesed) and also a Lonex cylinder head (aluminium did not hold up and was a moot point as this is not a moving part), so the amalgamation it has morphed into is what has worked best for me given the demands of my relatively high stress set up (high speed and high FPS)

Question: Given the fact that leaks are often present between inner barrels and buckings, is it not safe to say that if a hop up chamber creates a better seal around a bucking and inner barrel, say by way of more precise machining and smaller tolerances, there will be a lower volume of air lost (even if it is minimal) as that air travels from component to component, until it finally exerts its force on the bb? It stands to argue then that a hop up chamber could in fact increase FPS albeit by a nominal amount. This is not to say, that is where I lost 100 FPS, but if I can recover 5-10 FPS here and there by replacing components which could be engineered better, then I could reduce the strength of my spring and thereby increase the life span of my gun as a whole and continue to maintain the FPS I desire.

I do not claim to have all the answers. That's why I'm here asking for advice. I appreciate your time and the fact that you did not go into a history lesson.