I really appreciate your help, im now alot further, after a day i was starting to think id wasted quite a bit of cash.

as you can see im alot further, however, there is like a verticle line as u see here, its where it stops and spins around the other way i think if that makes sense.,

https://www.youtube.com/watch?v=mPTgJT4znsE
Capture.jpg
i also have a small issue where the hole is, its a interesting part in a way, the screw sits against a flat piece that opens out after the screwhead so it can push onto something. - to explain ive included a image of my model, along with some quality issues, including a roughness but im mainly interested in why the hole has clumped up!
ttop1.jpg
ttop2.jpg
thanks again and really happy you got me so far already!!