My AM-1 has begun clanking again on compression and seems more harsh. As noted by others below, this suggests that air needs to be bled from the TST cartridge. If this is true, this would be the second time this is required of my fork. How does this occur? The fork very suddenly began doing it, as it seemed normal yesterday and began clanking/harshness today on Noble. Can the TST cartridge suddenly take on more air? I was under the impression that this was something set at the factory rather than something that was variable. If anyone can explain, please do. Ownership of this fork has thus far seriously weakened my impression of Marzocchi's reliability, though their customer service has been good.