New to the Singer 111G156 machine. I have been reading a lot posts. I can engage the pinion to move the eccentric adjusting the step length. Question is should the hand wheel be able to turn all the way around while engaging pinion, adjusting between largest step and zero... mine does not, the eccentric hits the side of the housing it is in , one has to turn the hand wheel in the opposite direction to get to center. Does this matter? Numbers indicating SPI are not matching as well but I think that is a fall out of this problem.