I spoke with a producer who had similar bale diameter inconsistencies. Given we have tried about everything, his suggestion was excellent. He stated the inconsistency came from the pump pressure. Changing hyd lines etc allows air pockets etc to be in the system. So I will bleed the lines and see what transpires. Fingers crossed for this simple solution...I have a JD 535 round baler. I took on some neighbors meadows this year to hay. I decided to go though the baler. New belts, lower drive belt, bearings, etc. Thought all was well but now i can not get the baler to make a 6' diameter bale each time. I have the diameter knob set at 6. I've redone the assembly on the twine unit. My thought now is to replace the microswitches. Suggestions?