but surely the more you use it the sooner it will need recalibrating- thus driving up the costscorpio24v wrote:Torque wrench for me, after spending a shedfull on one I use it as often as possible to bring the costs down(the more you use it the cheaper it is, a bit like digital cameras)

Get used to how these bolts feel tightened by hand. By all means check with a torque wrench but try to develop a feel for it.