Hi Guys,As i said previously i was going to try a thread tension technique using magnets it appears to work better than springs washers etc etc etc.I have a 100mmx6mm bolt fixed to my rod wrapper onto which i slid a 1"x.5"x.25"ring magnet and slid it to the bottom,i then slid an inverted magnet onto the bolt so that the poles of the magnet repelled each other, i then slipped on the bobbin then a small washer and tightened it up with a locking nut.to achieve the desired tension i simply loosen the nut till i get the thread to flow freely,when the thread does come off the bobbin i get a consitant and very even tension,i will post pics of the set up as soon as i can
John..........ps watch the magnets when you catch your fingers between them it nips the skin a bit lol