Question Guide Scope for the Avalon Guide Scope Extender (AV-9EXG001)

I would like to know if the Avalon Guide Scope Extender is limited to 50mm guide scopes or if it can take 60mm guide scope such as the PrimaLuceLab 60mm Compact Guide Scope, or similar. The inside diameter of the Guide Scope Extender being approximately 63mm on one end and close to 70mm on the other end, making the guide scope alignment not obvious, if it fits.

Thanks for the help.

Gilles