ndevamp,
check your idler wheels first for proper operation. In time (~ 60 years) idler wheel develops flat spots which can be removed with sand paper while turning it. Also check pulley it has to be clean and glossy. Remove any residues with solvent. Better to change it into new ones pulley and idler.
Garrard 301/401 as is is capable to reach less than 0,1%. If modded properly I was told it can reach 0,04-0,05% w&f.
check your idler wheels first for proper operation. In time (~ 60 years) idler wheel develops flat spots which can be removed with sand paper while turning it. Also check pulley it has to be clean and glossy. Remove any residues with solvent. Better to change it into new ones pulley and idler.
Garrard 301/401 as is is capable to reach less than 0,1%. If modded properly I was told it can reach 0,04-0,05% w&f.