I would try unplugging the IAC with the engine at operating temp. The idle speed should drop... maybe even stall.
If it doesn't... look for vacuum leaks.
If it does... you could have issues with the ECM not seeing that the engine is warmed up and entering closed loop. Which could be the ECT...
E) use all the springs
We use to build all our spring packs when young. Then we got spoiled with a local spring shop the did fast... great work. They were very reasonable too. It wasn't worth messing with.
F) I got nothin
I recommend doing a test flare as you said... then check your results.
I would still recommend just buying the right tool. You may even get one on loan from the parts store. Just be careful... it is your brakes after all.
I'll say that even an underpowered snowblower beats the hell out of shovel work.
You also have just pushed every other component past its design limits.
I think you have a 50/50 chance you pushed the rest of the machine past its limits.
There should only be one line to the rear... at least my 06 with four wheel anti lock does.
I believe the lines are the same size but the fittings are uncommon. I usually just use side cutters and snip the line at the fitting. Remove it then clamp the fitting in a vice... use some penetrating...
Yeah... it would be some exposed wire on that circuit touching ground.
I would be careful testing using a 40 Amp fuse on that 30 Amp circuit. I would use a 30 Amp circuit breaker.
Get the circuit working and start wiggling that harness and see if you can make it blow. Check places where that...