Thanks, but now I’m confused (it’s not hard to confuse me).🤣
Both types say they fit the flat iron XL, and both say they are 105mm diameter.
I thought that was odd, as the tyres are 120mm, but figured, taking into account the depth of the tread, the internal diameter probably is about 105mm(??) but if so, and if both foams are the same diameter, why would the single stage flop about? Maybe because the single stage have a curved profile and the dual stage have a squared off profile?
Not questioning what you are saying but it is confusing.