just had a new clutch fitted to my black turbo...now there was a problem inside on the clutch arm/folk or sumut...a bolt had snapped so he drilled and tapped a new hole and put another bolt init, clutch works with no judder but when i take up drive i get this loud werin/buzz type noise.. when im up fully on the clutch it stops until i come down my gears... it comes back slightly like its catching slightly....also when i try to boot it...the engine stops and goes stops and goes...doesnt sound like a misfire. what would happen if a clutch has not been fitted properly????

cheers
andy