The O-ring replacements for the Core 2.1 do not fit properly and move around in the body of the chamber. This wasn't an issue with the original o-rings that came with the e-rig. This definitely impacts my overall experience and desire to continue with this brand and store.
M
Matt J
Meh
Got replacement o-rings for the carb cap stack as mine was tearing. Replacement is a much looser fit. Could be a positive or a negative depending on preference.