Hi there,
My 901s won't go on my Storm (801s and 510s are good to go). Do you have this issue with your Storm?
The diameter of the 901 atty is too small for the new "universal". I have pm'd Imeo but wondered how this worked for you and/or didn't?
Must say, it's mystifying me a bit since I've watched his Storm videos and he seems to be putting all 3 atty types on the Storm on the same end button.
I forgot to send you a small part Vaug, sorry