Thanks guys, really the SN10 is very fine scope.
Shiraz - Yes but still does suffer from comma even with the corrector plate as it is an f4. The units do work well with a good comma corrector.
Raymo - The optics are immaculate I have fully rebuilt the unit and I love the idea of photography without diffraction spikes lol. I may have posted a couple of images here I took with the scope during the rebuild. The scope has never been used. It also works well on my NEQ6 Pro was taking 2 minute images with a quick 2 star alignment and my guide scope.
Clanmac - Any ideas on a scope have not seen too many options around to replace this with, bearing in mind I also already have a C9.25"
I am very much leaning towards the focuser as I think it is money worth putting into a good imaging scope. I will keep you informed of the outcome.
Thanks
Carl