So I did the spline inspection last night through the starter hole. As you can see in the video below, my input shaft is badly worn. For anyone that has been wanting to do this, but was unsure of what to look for I hope this helps.
remove starter
zip tie clutch
trans in 1st gear
rotate outer edge of the clutch disc with thin screwdriver
watch for the clutch disc hub rotating in unison with the input shaft
Spline Video