insinkerator

Good afternoon all, does anyone know if you can get a 3/8 x 10mm John guest compatible straight or elbow adaptor? I’ve had a 3/8 tube between the insinkerator filter and a 10mm supply which has been intermittently reliable for a couple of years however it now is slipping out of the 10mm elbow...

Does anyone know what size the waste outlet (plug hole) is for a ikea stainless steel sink and will an insinkerator waste disposal fit? I am hoping to fit an insinkerator waste disposal unit to a ikea norrsjon sink.

I have a Insinkerator H3300 hot tap that is dripping from the tap handle - the company says the unit it sealed and there is no washer... but there is a small hole underneath which looks like it would release the handle, so far I cannot find an allen key to fit presuming it is this. Anybody else...