Normal stock nozzles have no inner O-rings, where airseal nozzles (whatever the make) do and provide a much better seal. I've wrapped the cylinder head nozzle in teflon tape before (just this past weekend on Apoc's SAW) then put the graphite lube on it, then the stock nozzle, and got a very noticable increase in compression (not that I chronied it, was sorting out his leaking problems which he "fixed" by putting half a tube of lithium grease into the cylinder, artificially getting the seal after he plugged his piston head ports with too much grease).
I think I'll buy some airleak nozzles to keep in stock on my next order.
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