I am writing because my replacement part does not look exactly like what I've ordered in the past.Nor does it fit exactly. I have attached an image of the original crank, an image of the stamped underside of the old unit, and an image of a replacement I ordered from you a few years ago
Features stamped on arm:
"GU" & an arrow Graphic stamped in arm
Stamped on underside:
Looks like a manufacture date of 3/02
US patent? 6.247.270
CA patent? 2.278.439
In years past, I have ordered Truth Dyad Operator, I re-ordered again, but doesn't look the same, I'll upload an image (installed) for you to compare.