Yeah that's how it felt when I installed it the first time at 123mm, pretty hard to pull it over on to the pin. But anyway I've just put the standard one back on and it's straight back to the way it was before, I'm back to a steady 0.65, it's not rising or dropping at all on full boost so it's got to be a faulty actuator. Gutted I'm all ready to turn the boost up now for more power! Anyone got a working pin type actuator for sale?