I require assistance on how to mechanically fix my printer feeder since I've tried every hint of suggestion on the internet and had no success. Subsequently I have been professionally advised to fix it mechanically so PLEASE DO NOT submit any answers fixing 'general' or 'common' feeder problems because I've had no success with them all. Of course, the answer with the cure to the printer will attain an extra 10 marks to their credit. (My printer model is the MP150 although this may probably be irrelevant.) Thanks in advance.