I am going to make an attempt here. When building you tried or trying to rebuild an engine or doing fabrication work other custom items what left you troubled or leaving you troubled. What is giving you a hard time or you do not understand. I am going to take a few moments when building motors and cars to try and address what seems to be common faults. I am sure and impose to the other professionals on the board that fall in category's that are not my expertise that they will do the same in an attempt to shed more light on the industry.