Sounds like you would benefit from purchasing Michael Fremer's Turntable Setup DVD. Do a Google search for reviews and availability. From all accounts it's very good.
Also, a quick Google search turned up Fidelis (fidelisav.com), a Basis dealer, located in Derry
Good luck!
Also, a quick Google search turned up Fidelis (fidelisav.com), a Basis dealer, located in Derry
Good luck!