"Jim GM4DHJ ..." wrote in message
...
On 16/05/2020 09:22, Jim GM4DHJ ... wrote:
On 15/05/2020 22:33, Jim GM4DHJ ... wrote:
On 15/05/2020 19:55, Andrew wrote:
On 14/05/2020 14:53, Jim GM4DHJ ... wrote:
yes but the oval bit retracts when you push the black button .....and
the blade falls out....

Why are you pressing the black button ?. That's for removing a blade.
The video shows the newblade being inserted OVER that over lug and
then rotated 90 degrees. Try NOT touching the black button.
that is true ,,,then it falls out...do a video tomorrow,,,,,


https://www.youtube.com/watch?v=P5GNd5_3eO0


when the blade falls out you have to turn the oval bit with a screwdriver
or the blad won't fit.....

Clearly there must be a difference. Likely the one that doesnt hold
the blades doesnt reset the blade release properly and you should
be able to see why when you dismantle both mechanisms.