So, a few days ago in the middle of doing some recording, my 388 suddenly stopped playing and rewinding properly. When it rewinds, with or without tape, the left reel will only move for a second and then stop, like it doesn't have the energy to do any more. And when playing, only the right reel will turn which means the tape is slow to follow and gains slack and distance from the rollers and all that. Obviously something must be wrong with the left reel/motor. Does anyone have any ideas on what I could do to fix this? Everything had been working fine before this incident. Many thanks for any help.