Thank you - good info, especially coming from a Wintec "local" so to speak. :)
I have read extensively online on the brand and have not seen 70kg restriction anywhere and have actually seen men ride in them, but will do some more research on that.
In terms of trees - apparently their dressage range have them flatter on the back, but I have never ridden in any Wintec until now.
Good point on Cair and rider weight - it ties back to the 70kg (or any other) restriction - I guess the weight restriction would address it if an issue exists at all. Reflocking is always an option, but better not to go to it from the get go of course.
I will come back and share if I decide to purchase one.