We must pay tribute to the Chinese, their production standards are approaching working ability! The screw holes on the assembly were only 2mm from the mounting holes on the welder. So close! I just had to drill them out a little to make them fit. Even the round flange that fits into the mounting hole only had to be cut flush on one side! Can you believe it!? The tolerances are amazing! The final blow for me was that once installed the motor was VERY ALMOST powerful enough to slip a wire through a gun! Fantastic work! Keep it up! I gave him the biggest, brightest, happiest, happiest star!