Trouble focusing with Skywatcher 150 PDS

[dslrastro]

Hi all, seems a bit of an odd one this. I have the Skywatcher 150 PDS, but for some reason I am unable to focus it via EP or DSLR with t ring. I have however used an extension tube which I push in through the focuser so it is almost touching the secondary mirror then everything is perfect. I have now sold the ED80 which I purchased the extension tube and flatener with, so I now have now no way to focus the 150 DPS. Any idea's please. Or can anyone explain to me what I need to purchase for the 150 PDS as I am going to SGLX and want to take this scope with me.

Many thanks indeed in advance

Steve

[nightfisher]

first, DSLR, remove the 1.25 eyepiece holder and screw the dslr t thread on in place, this should have the camera focusing in the right zone, if using a 2" eyepiece fit the 2" holder to top of focuser (black piece of focus tube) this is the second time this has come up this weekend, i have no problem with mine