Congrats Art! I remember those bumpers well, and were among the things I was excited to have in great condition, and not missing, when I bought my model 71 in the summer of '07 !
I thought there always was a plastic spacer between the carb and the engine on the Quiet Line models. I'm pretty sure my 1450 still has the plastic spacer in there, lol!
Also, planning on beginning the Kohler K301 engine clean up tomorrow for my 125.
Try to stay cool guys!