Advice to you Metz.. Naa man Jud ka cellphone.. I.record na... While naay rattling sound.. Then ipapaminaw nila... Or ask any technician sa ana nga casa or advisor to have them accompany you para maklaro Jud... Sad to say most mechanics/technicians na maau nanglarga na... Well naa man Jud mgA fresh grads.. Kaso... Experience is always more reliable plus of course technical knowledge...