I would also check the hose where the hose clamp is attached. Thats not a AC part, it has been changed before or replaced. Those small clamps dam near always cut into the hose if the hose isen't braided and if tightened too tight. FYI
I would guess that you have a cable out of spec. Probably over adjusted/under adjusted. The RPM will drop once you hit the reverse button, before going actually going into reverse.
So if it stalls going into reverse, how are you getting it out of reverse to run again??
If you have the side idler wheels still and if you are going to be in the powder, take them off. They made a huge difference on my '11 M1000. The track can get some flex.
ECU 5 will be an open or short circuit in the intake air temp sensor circuit.
If you just washed your sled, good chance it is water in conncetion some where. Clean and dry with air and dielectric grease plugs..
Are you using an ordinary ohm meter? I found that an ordinary ohm meter does not give accurate numbers on a stator. I have tried two of them.
There is a reason why Cat uses a Fluke meter, alot more accurate. Your lighting coil is a little low. .08-.12.
Charge coils arefrom 8.8-13.2.
Check your...
If you are blowing random fuses, you are getting spikes in voltage. Check your voltage regulator. Its on the right side of that sled, mag side, or even replace it.
Always use dielectric grease. Keeps out moisture.