an ignorant friend of mine tried to stop a playing record by holding on to it while it was still on. now, the tone arm is having trouble lowering. it lowers but not as quickly as it should and it seems like the sound quality is less then it was. also, when i put on a 45, the tone arm didnt travel far enough onto the record to get to the lead in groves so it skated off the edge. this wasnt an issue before. anyone have any ideas?