Can your Orion 80mm ED reach focus using this?

Hi guys,

I have a WO 2" SCT diagonal and I used it together with a 2" SCT adaptor on the Orion 80mm ED scope. I realised that it can't reach focus. The drawtube has been fully retracted, yet it still could not reach focus. This is with the Pentax 21mm XL.

Is it just me or this a normal problem?

Thanks
Vin

I expect that 2" SCT adapter is eating
an inch or two of back focus....