[ab1963 (Andrew)]

Hi everyone
just bought a sw 150 mak unseen and should have probably asked to see pics first and need a little advice ,firstly it is in silver and not the sw black and looks like it has push pull collimating button type things instead of the standard screws but collimation is fine,has a 10.1 gso crayford and that is fine,looks like someone has played footy with it on the ota which astounds me with astro gear but the optics look fine and it was cheap enough.
i had a little play around with it last night and cannot seem to get sharp views as i have become used to with my 3 and 4 inch refractors,i know the thing about horses for courses and all that,after all that the things i would like guidance on are
is it skywatcher or a rebrand as i can't seem to find one in anything but black,what could be the reason i can't bring it to sharp focus,
help would be most appreciated