If this thread is no longer dormant and has been resurrected via necronomicon ex mortis, I have discovered that one can make an H2 or H buffer by taking the tungsten weights out of an H3, and putting them in the proper order with one of the steel weights from the ubiquitous standard carbine buffers I'm sure we all have lying around. Thus, I only buy H3 buffers, and then can switch it down to an H2 or H as needed, or back up to an H3-- and I now have a use for the standard buffers...