I wanted to circle back and let you know what I wound up doing to fix the creep mode on the swing circuit.
First up, I failed to keep the control console dry and after the first rain, I went to use the lift and I discovered the hard way that the controls have a mind of their own when wet. I stepped on the deadman switch and the lift went straight forward at full speed into a 3 bottom plow and ran the handle of the plow through the radiator . . . $420 later and some minor mods and the cooling system was fixed.
I dried out the controls and then replaced the pot on the joystick and the drive controls were still flakey and dangerous. In my searching for a new joystick, I came across this unit and ordered it.
http://www.ebay.com/itm/JLG-Joystic...ING/172864129480?_trksid=p2485497.m4902.l9144
In the interim, I had to move the lift so I rewired the boom swing joystick to the drive controls and now the drive would not work in creep mode. I noticed the 4 pots on the joystick and after looking at all three joysticks I found that the labels had fallen off nearly all of them except one joystick had a LO label and another had a RMP label.
So I did some sleuthing and figured out that the pots should be labeled LO, MED, HI, RMP and that Clockwise increased the function while CCW decreased the function. So while in creep mode I experimented with a single turn of one of the two unknown pots and this cause the machine to respond in creep mode. So I labeled that pot MED and then I switched to normal speed and adjusted the HI pot up and down and this affected the top speed for the machine, then I adjusted the RMP pot which changed the slew rate of the command. After all my adjusting, I could control the drive as predictably as ever and as smooth as butter. Then I reconnected it to the swing circuit and this axis now moves reliably and smoothly in both normal and creep modes.
When the new joystick showed up, I installed it on the swing axis and the old swing joystick is now on the drive control and I adjusted both sets of pots to optimize for smooth control.
The lift has achieved Nirvana for now . . . just need to get a cover for the control console for when it rains now. Perhaps a BBQ cover or???
With new radiator and a new joystick and the old joysticks adjusted, I feel like the next person to use it can do so with a lot more confidence.