I didn't mention that the reason I started building my shocks with gas pressurization is that when 1/8 on-road racing a few years ago I built my shocks without pressurization and had to re-build them every race due to foaming and air entry around the shaft. When they are pressurized air is less likely to get in around the shaft and foaming is less likely. So, when I switched to 1/10 electric on road I still build my shocks pressurized. Thought I'd like to try the aeration shocks and see how they compare.