An accurate 8 3/4" rear axle width list

Does anyone know the min/max space for the pin w/buttons installed for the Suregrip to function properly? Proper spider/disk engagement, not as critical on the one piece spider-disk as it is on the two piece.

I posted this so members converting from open to suregrip can get an accurate assessment as to weather the existing axles will be adequate for use as is/was the case for @Miszny where the old axles were to short causing additional troubleshooting and removal/replacement. I'm sure I would have made the same mistake

New axles too short?

upload_2022-5-11_9-55-4.jpeg
screenshot credit to drdiff