1982 XJ 550 Crank No Start - I'm lost

Hey everyone, I'm at a loss, and seeking some help.

about a year ago I picked up a non running 1982 XJ550 maxim and have been messing around with it here and there.
when I got it is was in this condition:
- no crank (bad starter)
- dirty carbs
- been laid down.
- "last ran 5 years ago"
-15,000 miles

Things I've tested, and things I've done
- cleaned carbs thoroughly
- replaced starter (cranks nice and fast)
- tested compression (120-140 throughout)
- checked spark, strong on all 4
- replaced plugs
- brand new battery

my problem I can't get the damned thing to start. I got it to start once or twice after cranking for a several minutes. when it started up I ran/idled, albeit like crap, and reved with some hesitation. and I haven't gotten it to start since then. It has zero reaction to starter fluid or gas in the carbs. I'm lost on what I should check now. bad coils under compression? valve lash? timing? thank you all so much in advance! I just want to get this ready for riding season!

TLDR: It has fuel, spark, and compression but is near impossible to start. I'm wondering what I should do next.

 

A few things.
Compression is great and that is what sucks the juice in.

1. Valve clearance
2. Dropped... Did it damage the reluctor or twist something on the left hand side of the crank
3. Air leakage... All encompassing issue carb wise.
4. As another chap in a current thread noticed, the carbs had the wrong pilot jets.

 

Zero reaction to starter fluid, well then have to look at spark again. Making sure you have a really good battery or even jumping the bike from another bigger battery is a good way to make sure low voltage is not an issue. As @css1984 mentioned, if the intake vales are not allowing spray or fuel in, then the bike will not run.

Clean all the plugs again. Test the plugs for spark with the lights off in your area if you can. Hope that you get a good blue spark on the plugs. If the spark is red that is not the best but having any spark is a good thing. If there is any corrosion on the contacts? Have you checked what the spark plug cap's to the wire connection looks like. If you remove them and see green or chalky white, clean them up. You can even remove a very small portion of the plug wire to get to good copper wire again.

Good luck and keep the updates for the troubleshooting coming.