Last year I went back to a mechanical fuel pump in the TR250 after issues with a electric pump. A lot of talk at the time of the poor fuel pumps that were being produced. Then word came out that the mechanical pumps were much improved so I purchased one. Well Sunday the car developed a miss and discovered that the pump is making noises and the in-line filter you can see there is only a little spritz of fuel from time to time. Any one have any issues/problems with these new pumps?